They don’t give a shit anymore. The business customers are paying for 365 and the gamers are paying for gamepass. Those are the money makers now. If you want you can run windows, but if you’re still running windows apps (including 365) then Microsoft still gets paid.
Why do screens need to fold at all? In folded mode an edge to edge screen is enough and in unfolded mode two more of those can combine to make one large display. It’s the same as those led walls you see in places, made of edgeless panels that slot in next to each other. Curving the pixels is stupid.