You do know Windows is an open platform? MS doesn't make any money from any Windows application, nor do they make any money from any digital storefront that isn't their own. Putting their titles or not on PC is irrelevant for them, as gaming on Linux or Macs is not an alternative to Windows, so Windows sales are unaffected. The reason why they are putting their games on PC is because they are trying to increase their userbase through Gamepass, as they know they can't beat Sony or Nintendo at the hardware game.
I don't think it will ever become profitable, given that aside from the daily losses, they had to invest 7 billion to acquire Bethesda. I could be wrong of course, but I doubt they will reach a 50 million paying subscribers. Gamers are a notoriously conservative bunch. The biggest change in 30 years in game distribution is that half the people are fine with not getting the boxes the games come in.
No. no. no. and again no
Do you know that Windows isn't an opensource OS? No one have the control over windows as their developer and owner Microsoft. They choose and build everything from the design to the API's and most important to the preinstalled apps.In fact there's the Xbox app in very computer sold everyday. Windows OS was here before steam before EGS and will likely be there after their failure, if it will ever happen. Did you heard about Windows core and c-shell I suggest you read something about it so maybe you will understand Microsoft's plans better.
I about gp profitability i think you are wrong. very wrong.