December 9, 2025

 Investors are once again whispering about market bubbles, but history shows that widespread concern doesn’t stop bubbles from forming. Drawing on commentary from MarketWatch, this article urges entrepreneurs to focus on fundamentals rather than hype and to avoid the herd mentality that precedes every crash.

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Every few years, the word “bubble” re‑enters the investment lexicon. It’s usually accompanied by a knowing smirk from market veterans and a shrug from newcomers who believe they’ll get out before the crash. Recently, MarketWatch columnist Mark Hulbert reminded investors that bubbles don’t pop just because people talk about them. The dot‑com bubble of the early 2000s and the housing bubble of 2006 were both widely discussed, yet millions of investors still got burned. The lesson? Awareness of a bubble doesn’t prevent it from inflating or bursting. What matters is how you respond to that awareness.

A bubble occurs when asset prices rise far above their intrinsic value, fueled by speculation and the belief that there will always be a “greater fool” willing to pay more. In the late 1990s, tech companies with no profits traded at astronomical multiples because everyone believed the internet would change everything. It did, but valuations eventually had to reflect reality. Similarly, mid‑2000s home buyers convinced themselves that real estate could never fall because “they aren’t making any more land.” When credit dried up and homeowners couldn’t keep up with adjustable‑rate mortgages, the bubble popped spectacularly. Today, we see echoes of that enthusiasm in areas like artificial intelligence, meme stocks and yes, even some crypto projects.

None of this is to say that innovation is bad or that entrepreneurs should avoid emerging industries. The problem arises when valuations are driven more by narrative than by cash flow. Hulbert argues that bubbles are especially dangerous when people convince themselves that a new era means old rules no longer apply. During the dot‑com boom, pundits declared that revenue didn’t matter as long as a company had “eyeballs.” In the housing boom, the mantra was “real estate only goes up.” In our current cycle, some investors believe AI will eradicate human labor overnight and that every coin with a dog on it is destined to moon. Those beliefs may turn out to be partially true, but that doesn’t justify paying infinite prices.

Instead of trying to predict when a bubble will burst, entrepreneurs should focus on what they can control: the quality of their investments. Look for businesses with durable competitive advantages, growing cash flows and reasonable valuations. Understand the difference between price and value. If you can explain in plain language how a company makes money and why its earnings will grow, you’re less likely to be swept up in a speculative frenzy. Diversify across asset classes and sectors so that a blow‑up in one area doesn’t torpedo your entire portfolio.

It’s also important to recognize your own biases. We all love a good story, especially when it confirms our desire for easy riches. Ask yourself: am I buying this asset because I believe in its future cash flows, or because everyone on social media says it’s the next big thing? Would I still be comfortable owning it if it dropped 50 %? These are the tough questions that separate disciplined investors from speculators. At the end of the day, there is no substitute for doing your own homework.

As an entrepreneur, you know that building a business is about more than chasing fads; it’s about creating real value. Apply that same mindset to your investments. Embrace new technologies, but don’t abandon the timeless principles of valuation, diversification and risk management. Remember that bubbles form and burst not because we talk about them, but because human nature hasn’t changed. Your job isn’t to outsmart the market, it’s to outsmart your own emotions.

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