That's not necessarily the only way. Another way would be if the market was in a state where the EV of starting a company was roughly the same as the EV of work

That's not necessarily the only way. Another way would be if the market was in a state where the EV of starting a company was roughly the same as the EV of working for someone else. People living cheque to cheque would still have less options, but they wouldn't be inherently worse, and over time inequality would stabilize instead of compounding (which I suspect is what is happening currently). I don't actually think this is a better solution than progressive taxation and decent welfare though (and I'd also have no idea how you'd coax the market in that direction anyway), because it doesn't also solve the problem of the economy losing out on potential successful businesses because their owners weren't wealthy enough to start them.