And yet there are two Microsoft web browsers in Windows 10, as well as a word processor, a Skype client and probably more.
Part of the legal test or standard used for anti-competitive bundling (e.g. how long has this been practiced and was everyone else doing it, too). Microsoft couldn't be expected to HARM its competitiveness if everyone else was including these things, too. Several of those things were in operating systems for almost as long as there has been commercial market for them, and was comparable to other (now defunct) operating systems which also bundled a word processor, audio recorder, graphics editor/creation, or whatever. e.g. Amiga, OS/2, Macintosh, Atari ST, et. al. all had some bundled features that could be or were essentially applications.
But a bigger crime is that the DVD consortium of IP owners after making a bazillion dollars on 20 y.o. technology can still charge enough for a fucking basic codec to make even a behemoth like Microsoft say "Meh....I guess we'll just pass then."