Oh I am none too great a fan of the old embrace, extent, extinguish model having DirectX as one of its biggest victories at the cost of the then nascent 3d graphics API market for games (CAD and big boy 3d was and still is openGL country). On the flip side it was ripe for the plucking (at times the term S3 virge is likely to see me start rocking in the corner though it was not so common as other things that caused me hassle), equally to its credit much of its rise came not from a buyout and shady dealings as much as allowing developers to ply their trade and try as I might I can not knock that move on both the business and engineering fronts. That said for establishing Microsoft's credentials in the "they had nothing to do with games before the xbox" debate, as was the original intention of that post, I can not ignore DirectX.
Microsoft on the way out. I have read many great opinion pieces on the matter (
http://www.theregister.co.uk/2013/07/29/microsoft_might_yet_win/ and
http://www.theregister.co.uk/2013/07/01/microsoft_kills_technet/ being two plucked from a quick search of my history) and I have no doubt they are in interesting times. I am not sure this thread is the venue for that discussion though.