Cause MS has one thing in mind this genration, grab market share and living room space.
The real war here is the battle of the living room and gateways to the internet though set top boxes. Games are the appeal that gets this all rolling and keeps it rolling.
MS is a new comer, and sure they\'d like to make a huge profit and will strive too, but whatr MS really wants is a solid footing in the market and a even playing floor for the next round.
Why would they place so much effort on buying these companies to where they end up losing money overall, though? This would cause them to lose money throughout the entire five year console war. Unless I\'ve totally screwed up and missed your point..
I do see what you are saying though; gaining a large userbase is a definite large priority. I doubt they would want to take a large loss to do this, though.