So sure, it’s possible to become a billionaire by writing books just look at J.K. Rawling. Hell someone got 10,000 bitcoins for the price of 2 pizza, which in theory are worth 366,790,000$ today. In the end the upside of being the founder isn’t worth much on day one. It might be worth something down the line, but it’s critical to have a fallback option.
Which is why I've been mentioning "risks" in just about every post I've made. Which is why a big part of OP is how taxing and difficult it's been. Why is why we keep talking about how 9/10 businesses fail. There's no free lunch.
But my original point was that we already know this. So it's not particularly insightful to point it out on a forum almost exclusively dedicated to people working on startups.
Accounting for taxes ruins it a bit, but once the jackpot gets high enough it's dumb not to buy a ticket.
Consider your personal utility function, at 70 what odds would you need to play double or nothing with your entire life’s savings. If it takes more than 50.1:49.9 odds then you like most people don’t have a linear view of money.