I know that irl it doesn't work well, yet to have more clients you have to make the prices less expensive. There are a lot of other ways to also get money anyway. To get models etc. it's not easy, but if they could make a free game in itch.io and google play, then it wouldn't be really really hard to make a full game, since all the models and stuff are done.
ps : I'm bad at explaining so dw😉