Arguably, Microsoft isn't being particularly anticompetitive right now. Particularly in phones, where they can't afford to be. (In fact, general feedback has it that Microsoft's apps are better on iOS and Android than their own platform.)

Unfortunately for many of us, it's impossible to avoid dealing with at least one of these big behemoth companies. The best we can do is to keep dancing from one to one based on what the least worst option is at the time.

Right now, I'd trust Microsoft over both Google and Apple, but I also have no misconceptions about the reality that at some point, that will almost certainly change. When a company is on top, it looks for how to stay there. So the goal for the freedom-minded individual should probably be to constantly support the party currently losing the war.

Better to have multiple, competitive companies vacuuming up the information than 1 company.