What bothers me about people bringing Embrace, Extend, Extinguish is how they never mention how all the big software companies do this. For example, how many nice JavaScript features are in Google Chrome that aren't anywhere close to real standards? But when anyone but Microsoft does it they're just pushing the industry forward, not out to stab you in the back.
Let's not call it Embrace, Extend, Extinguish until we see the Extend & Extinguish. Microsoft is a very different company than it used to be.