Don't be an indie game developer! Heh. Here's why;
Wait... you've made some games before and you know a bit of game design? You stumbled onto some fun mechanics / gameplay loops? You did some proper marketing within your niche and got a small supportive community?? People are liking it?!?! NO?!?!?!?! YOU CAN'T BE AN INDIE GAME DEV NOOO REEEEEEEEE
STOP... STOP LOOKING AT STEAM!! IT'S NOT LIKE THERE'S A TON OF NOT-WELL-KNOWN GAMES WITHIN CERTAIN NICHES THAT ARE SUCCESSFUL AND PROFITABLE... NOO.... YOU CAN'T BE AN INDIE YOU CAN'T!!!!