As a data point, they recently did the same thing in Teams.
I'd also say there is some precedent with them being interested in monopolizing software products (Internet Explorer / Windows lawsuit ~ 2001). https://en.wikipedia.org/wiki/United_States_v._Microsoft_Corp.
I'd appreciate it if they (either by choice or by force) took some of the Microsoft out of Microsoft products, honestly. At least let me choose what apps to install on my machine (instead of MS Store pushing garbage onto my computers without permission). As a sysadmin, I'd pay a premium to have the ability to just provide my users an OS free of the consumer nonsense that gets smeared all over an otherwise good product. It's gotten a bit better over time but things like Solitare, LinkedIN and so on are present per profile for every computer I admin, and so I either have to scrub this stuff off with a powershell script (which may or may not be enough) or I have to go in and delete things manually. Never mind that neither method works for Edge, which is baked-in to the OS (similar to the 2001 lawsuit claims).
So yes, I think there's ample evidence that Microsoft is monopolistic at heart.