> Are there so many thousands of those types of people that it needs to be broadcast as a blog post?
Yes. There are a ton of SaaS startups with two or three clients each paying a few hundred thousands of dollars per year. This is the area where it doesn't make sense to shut down the business because with even a couple more clients it would be worth $20M+, but where even if you could it probably wouldn't make sense to raise money.
For people who have already put in the 10+ years to develop the skillset to build a huge company (e.g. learned marketing, coding, sales, etc.), this may actually be the most common outcome.
The point is that once you raise even a seed round you're now a wealth manager who is getting judged on your ability to generate IRR and cash-on-cash return and liquidity, not just your ability to make something cool and use it to support yourself. Yes, starting a $100M business is impressive, but once you decide you want to be in the business of being a wealth manager then it becomes a means to an end rather than being the end goal itself.