Investing in Hype Industries: An Angel Investor’s Guide

Brian Nichols is the co-founder of Angel Squad, an angel investing community where aspiring and active angels learn from Hustle Fund’s approach, review curated deal flow, and connect with peers.

Category growth can be real while a startup riding it is weak. Your decision is whether sector momentum becomes company-level capture through repeated customer demand, an advantage competitors cannot copy, healthy economics, sensible terms, and enough capital to survive. These checks help you separate those two without pretending a checklist can guarantee a return.

We use the same distinction in Angel Squad, our angel-investing community for education, peer learning, and curated deal flow.

What makes an industry “hyped”

A hyped industry has more attention than evidence. The opportunity may still be real. Three signals are moving at different speeds:

• Observed adoption: customers use the product repeatedly, pay for it, renew, or expand their use.
• Credible forward demand: buyers have a funded need, an adoption plan, and a clear decision-maker, even if purchasing takes time.
• Narrative excitement: founders, investors, media, and prospective customers talk about what the category could become.

Hype can speed up customer education, attract talent, unlock capital, and encourage infrastructure to form around a new market. It also attracts imitators and raises expectations faster than many companies can meet them. More startups chase the same buyers, customer acquisition gets expensive, and category novelty can disguise weak retention.

The gap between current behavior and stated intent is especially useful. In a U.S. Census Bureau study covering November 2025 through January 2026, 18% of firms reported using artificial intelligence in a business function while 22% expected to use it within six months. That four-point gap is neither proof of a boom nor proof of a bubble. It is a prompt to ask which companies are inside the 18% today and what would move a customer from expectation to use. Census Bureau research

More than 20 million electric cars sold globally in 2025. Separately, the top five battery-electric models represented about 20% of battery-electric sales. Those figures describe category volume and model-sales concentration. They do not explain why customers selected those models, so they cannot replace product-level diligence. IEA market data

Sector momentum is not company advantage

A durable framework for investing in hype industries studies differentiation, timing, and the opportunities created when the crowd looks elsewhere. Each point needs company evidence behind it.

Differentiation has to survive contact with alternatives

Start with the customer’s full choice set. Direct competitors are only one part of it. The buyer can keep an existing workflow, hire a person, build an internal tool, use a general-purpose platform, or do nothing.

Ask why the customer chooses this startup and what becomes harder to copy as the company grows. Proprietary data, regulated distribution, deep workflow integration, trusted relationships, and a cost advantage can matter. A feature that a larger competitor can ship next quarter is a thinner edge. Our guide to evaluating crowded markets goes deeper on this test.

Timing should create pull somewhere specific

“Early” only helps when the market is ready enough to buy. Look for a neglected customer, workflow, or geography where the company can learn cheaply and build distribution before the field gets crowded. Greenfield opportunities can exist in places where a proven model still faces little direct competition.

Timing also changes underneath you. Our general partner Eric Bahn puts it plainly: “When it comes to markets, you always need to factor in: is something that is true today going to be true tomorrow?”

Contrarian investing still requires a working business

An out-of-favor sector may offer less competition for talent, customers, and capital. It may also be out of favor because demand failed to arrive or the economics never worked.

Lower attention creates room for diligence. It does not prove a bargain. Ask what changed, which assumptions broke, and why this company can succeed under today’s conditions. Being alone is useful only when customers are still there.

An eight-part diligence checklist for hype industries

Use these questions to test whether the company can capture the sector opportunity. The answers will vary by business model and stage, so resist turning the checklist into a universal score.

1. Observed adoption

Separate activity from commitment. A waitlist shows interest. A pilot shows willingness to try. Repeated use, retention, paid conversion, and budget ownership show stronger adoption.

Ask for a cohort view: Who started using the product during the same period, how many still use it, and what did they pay? Then ask who owns the budget and what event triggers a purchase. The U.S. Securities and Exchange Commission (SEC) offers a useful discipline in its key performance indicator guidance: define each metric, explain how it is calculated, and keep the method consistent. “Users” should not quietly change from active accounts to everyone who ever signed up.

2. Differentiation

Ask the founder to name the closest alternative and the reason customers switch. Then probe what compounds with each new customer: better data, lower costs, denser distribution, faster implementation, or deeper trust.

Founder enthusiasm for the category is not a defensible advantage. A credible answer connects the company’s advantage to a buying decision you can observe.

3. Customer acquisition after attention fades

Customer acquisition cost (CAC) is the sales and marketing spend required to win a customer. Free press and category curiosity can make early CAC look flattering.

Break the funnel into discovery, conversion, and retention. Which channel produced each customer? How long did the sale take? How many prospects converted? How many stayed? Ask what happens if inbound interest falls by half. A company that still knows how to find and keep customers has more than a moment.

4. Founder expertise

Look for earned insight rather than trend fluency. A founder may have lived the problem, sold to the buyer, built the underlying technology, navigated the regulator, or earned access to a hard-to-reach network.

Test that edge with specifics. Which common industry assumption is wrong? Which customer objection surprised the team? What can this founder learn faster than a smart newcomer? Genuine expertise usually produces sharper answers and fewer buzzwords.

5. Valuation and deal terms

Price changes the evidence you need. Start by naming the security, meaning the legal investment your check buys. It may be shares, debt, or a contract that may provide shares later. Ask what must go right for the company to grow into the proposed valuation, what ownership, if any, your check provides today or may provide later, and, if you receive shares, how future financing could shrink your percentage ownership by adding new shares. Review the security, the capitalization table that records who owns what, conversion terms, if any, investor rights, and any separate investor agreements with qualified counsel.

There is no universal “good” ratio between an early-stage startup’s valuation and its revenue. Compare the price with the company’s stage, evidence of customer demand, capital needs, likely future rounds, and plausible outcomes. Our guide to overvalued startup signals gives you more questions to ask.

Hustle Fund co-founder and general partner Elizabeth Yin’s advice fits hype markets well: “It's important to realize that you need to go back to fundamentals and not get caught in the hype.”

6. Capital requirements and runway

Runway is the time a startup can operate before it runs out of cash. A single runway target ignores too much. A software company with short sales cycles faces a different financing problem from a hardware company funding certification, manufacturing, and inventory.

Map cash to the next value-creating milestone. Ask how much capital that milestone requires, what would make the next round possible, and what the team would cut if fundraising took longer or cost more. The cash plan should include hiring, infrastructure, inventory, compliance, and cash tied up in day-to-day operations. It should also show how future rounds might shrink each investor’s percentage ownership.

7. Regulation and timing dependencies

Regulation can shape product design, sales cycles, market access, and capital needs. Identify the exact approval, license, review, or compliance obligation, the jurisdiction that imposes it, and the evidence already in hand.

Avoid category-wide shortcuts. The U.S. Food and Drug Administration (FDA) sorts medical devices into three risk-based classes with different controls; Class III devices face the most stringent controls and premarket approval. That is more useful than saying every medical device needs the same approval. FDA regulatory controls

Then list the other timing dependencies: procurement cycles, reimbursement, infrastructure buildout, standards, partner integration, or customer behavior. A great product can still be early if the surrounding system is not ready.

8. Downside and portfolio sizing

Define the failure case before deciding the check. What happens if adoption takes twice as long, the next round never arrives, a platform copies the feature, or regulation changes? Which assumption would you learn about first?

Size the investment so a total loss would not force you to abandon your portfolio plan or double down emotionally. Avoid letting one popular narrative dominate your startup exposure. The SEC notes that investors can diversify by industry to reduce the damage caused by a trend or event in one sector. Diversification cannot prevent losses. Concentration makes one thesis carry more of the portfolio.

Combine the evidence into a decision, not a score

The eight checks roll into six lenses. Founder expertise strengthens or weakens differentiation. Customer acquisition and valuation sit inside economics. The other checks keep their own lens because each can break an otherwise exciting investment.

Read the lenses together. Strong adoption at an unsupported price is still a pricing problem. Great differentiation with no affordable path to customers is still a distribution problem. A credible team with nine months of cash and no milestone that would make another funding round plausible is still a capital problem.

Use three priorities to reach a decision:

1. Observed evidence over forecasts. Give repeated behavior more weight than surveys, waitlists, or market-size slides.
2. Company advantage over category popularity. Identify the mechanism that lets this startup capture value as rivals arrive.
3. Disciplined sizing over conviction theater. Match the check to the uncertainty, the downside, and your broader portfolio.

Your answer may be a check, a pass, or a time-bound wait for one missing piece of evidence. Write down the condition that would change your view. That record helps you learn from the decision instead of rewriting the story later.

Want another set of eyes on the story?

Hype can point you toward a real market, but the company still has to earn the investment. If you want to practice that judgment with other angels, apply to Angel Squad and bring this checklist to the next deal you review.

Early-stage startup investments are speculative, illiquid, and long term. You may lose your entire investment. This material is educational and is not investment, legal, or tax advice. Review the governing documents and consult qualified independent financial, legal, and tax advisers before investing.