Surrendered in what way? Do those billion of people exclusively only use android/iOS and only pay with Visa/Mastercard?
And when this kind of power it's consolidated with a handful of companies, you leave people with nowhere to go for any kind of real success. So you're forced to compromise your vision in order to get any shelf space.
Money money money money money money money money money.
Money.
This game is available on Steam, Epic Games, itch.io, MacOS, Xbox, Switch, Playstation, iOS, and probably some more. Play Store is just one platform, a big one, sure, but it's not like there is a coordinated attack on banning this game from the internet.