The stranger thing is for small apps Apple/Google is providing services of more than 30% I think. Basically they are managing everything and a lot of time also

The stranger thing is for small apps Apple/Google is providing services of more than 30% I think. Basically they are managing everything and a lot of time also promoting it for a small price. But the apps that are already famous like fortnite, a user who install it will likely install if Apple/Google is not involved.