My friend quit his job and has been making indie games since 2015. It's been 20 10 years and he's made like $40,000 total in the time with all his games combined. His wife pays all the bills. Every time he releases a new game he tells everyone this is the one that'll make him a million bucks. He points to games like Hollowknight, Stardew Valley, Undertale etc as proof.