If there is a kind of saturation, it's because of the huge increase of free gaming content.
For fun I regularly look up how many games have a playable demo on the Nintendo e-shop. You can spend months, years even just playing those if money is tight, or you'd like to spend it on something else. 'Free to Play' games are funded primarily by whales. But for every whale, there are hundreds (thousands?), that don't spend a dime on such game.
Now to have a low cost or free option is good for consumers obviously. But there is only so much time people spend on gaming, so if a purchase decision is made it's only going to be for the games people are convinced of. a.k.a. Games with hype behind them.
I think more experimental purchases, in "ok don't know much about the game, but let's give it a try'", probably have declined.