I wouldn't consider most of those exclusives but company titles. They also exist on the console world but are a different concept (like Halo for example) I'm u

I wouldn't consider most of those exclusives but company titles. They also exist on the console world but are a different concept (like Halo for example) I'm unaware of a single contract where Google or Apple paid some money to a company to keep the exclusivity like what happens on console.