Mark went work for MS, as I recall. This was some years ago; I don't know about currently.

MS sucked in the tools/pages onto its domain. Navigation to/of their pages and versions became somewhat shittier (per the... "canonical" MS web experience, I guess). I seem to recall a bit of public pushback on this point, and things improved somewhat. Maybe I mis-recollect; I've been mostly away from Windows for quite a number of years, now.