It is a double-edged sword for a dev. When a genre is over-satured (which most arent) there is usually a large player pool of potential customers but you’re competing with so many games that realistically your game needs to be really amazing to compete. Reason is that there is so many soul-like that a lot of players have a backlog of games to play already, and unless yours reach top 10 or something, there could be dozens and dozens of games that are simply more enticing than yours, meaning the average gamer will never make it to playing your game.
Making a game that makes it to the top on a saturated genre is simply very hard, and a very risky business decision.