If you're looking to cash in on a unicorn, you are almost always better off working somewhere else that will pay you the most in cash and using that cash to make your unicorn bets.
But the allure of partaking in massive success in a revolutionary startup is pretty significant. Less so if you have a steady salary perhaps, but I wouldn't be surprised to see a few of these people use the safety net of savings and a solid technical rep to try some riskier innovation.
I really can't believe I'm explaining startup allure on HN.
You can still partake in the massive success of revolutionary startups with your cash. In fact, you're in a much better position to, because if you're making a lot of cash, odds are you are senior and connected in your field. You have better odds of picking winners and investing in them.
There's also opportunity to buy pre-IPO shares.
Being a qualified investor (which you can get to from zero in as little as 4-5 years if you're making FAANG cash) helps a lot.
Remember, Basecamp pays the 90th percentile of San Francisco rates + profit sharing kickbacks for a company that's fully remote. Regardless of position.