Investors know the long odds of success, so they invest in twenty to thirty companies and wait for one to get big.
Founders and employees can't diversify like that, because you only have so many working years. To mitigate this we have decided to award successful founders with huge paydays as a lure to others to throw their hats in the ring. This has some malign effects, namely unsuccessful founders and employees get bupkis. It also attracts the wrong sort of personality to be a founder, selecting for too much risk appetite. (At least what I consider the wrong sort for building a sustainably profitable business.)
I have an idea for how to solve this and I wonder if it's already been tried or if there are holes in it. The idea is to spread the risk of starting a company across something like an accelerator class. If one company in that class gets big, it would be contractually obligated to hire and grant shares from some pool to other members of that class. This would be at the cost of the winning founders' stakes.
The upside for winners would be much lower, but the downside would be lower too. This would attract a different sort of person to this accelerator, and be a differentiator for selecting talent.