It is a hefty premium price tag to acquire EA, however MS could do so easily and quickly. I am hesitant to think that it would, but I do agree that there are some big things MS would get by getting EA and things that line up with MS own plans and way of thinking.
Thinking of exclusivity, MS would have its hands on some very lucrative titles, as well as Origin, which is EAs version of Steam IIRC.
I doubt Valve would sell, not when they are doing quite well, but I could see Steam getting a HUGE upgrade with titles that MS has in its hands. SO its not impossible.
Very interesting to say the least, and yes its funny given that article about SWTOR and being done in terms of content.
However all aside, imagine what might happen if MS DID buy EA... SWTOR might be evaluated as a place where more money could be had so I like to entertain the notion of MS funding some WOW sized expansions to SUCK up a lot of money for the final years the SW rights give.