People use something out of value and/or convenience. It taking over is just the effect of that. It’s capitalism not some underlying motive from the corporation. Of course a business wants their product to succeed.
I find massive value in the service so I subscribe to it. When I don’t I won’t. It’s not the deep “bro”. Maybe Microsoft does have some underlying motive to reshape the gaming industry but I’m not going to think about it that hard. Also things change and it’s ok. Apple started the digital music movement BTW and I’m not an artist so that is theirs and the labels deal to negotiate. Spotify is great value too FYI.