Bing is nowhere near the market share as google. Azure competes with AWS and others. Xbox competes with Sony and Nintendo. Microsoft store competes with Steam. IE and edge are also being beaten by Chrome. I think the argument that Microsoft has a monopoly is much less feasible.
One acquaintance of mine that works at MS humorously remarked on the irony of situation along these lines, "Back in the day Microsoft was the Big Bad. But now we're not big in social media, we're not big in advertising or search. All these other companies are taking the heat now - not for our lack of trying to get into these spaces, though (laughs)."