"leaving money on the table" is not the same as "becoming a viable job". For many, enough money is enough, and the culture of the workplace, who you work with, what product you're building and more, is more important than the amount of money you earn. At a certain point, you earn enough money monthly to be happy and increasing that some percent but having to work a lot harder (or worse: working on things you don't really care about) is a shitty tradeoff.