

I don’t think the chances are that remote.
Microsoft values backwards compatibility a lot. At least in windows. So from a technical viewpoint, the older Xbox games are probably already compatible with the newest Xbox. If that is the case, technically it would be as easy as removing the arbitrary check that the Xbox version matches. Maybe add a frame rate limiter so old games that calculated time for physics based on frame rate don’t break.
From a business perspective, Microsoft does not sell as many remakes/remasters as other companies (like Nintendo, that just sells you an old game+emulator for absurd prices).
In fact, with gamepass, Microsoft states that it doesn’t want to sell you games. It just wants you to spend as much time in Xbox/WinPC paying their subscriptions.
Allowing old games will mean bringing them to gampass too. Which is what they want. They want as many games in gamepass as possible.

I can respond to every single comment of yours. It’s just that my time is worth much more than that. Since Russia has basically an infinite amount of propaganda and you won’t stop until you spew all of it.
If you were a user that used logic and reasoning I might be motivated enough to engage in conversation. You are not, however.