No it doesn't. Gaining marketshare often happens at the cost of profits. Particularly if you're following the razors and blades model, as MS and Sony are. In the long run, a fight like that only kills both companies. And unlike the PS2 gen, there is no prize they are fighting over as neither is going to leave the other in the dust. Both should be looking to make profit in the near term if there is any point in staying in the business at all.
I mean, look at what the fight for marketshare has cost Sony:
http://www.vgchartz.com/forum/thread.php?id=57802
They've already squandered most of what they've ever gained in the games industry with the PS3. They've gained marketshare, but they're not going to make it back as long as Stringer lives:
http://www.mcvuk.com/news/31607/Stringer-PS3-business-model-inferior-to-Wiis
A game I'm developing with some friends:
www.xnagg.com/zombieasteroids/publish.htm
It is largely a technical exercise but feedback is appreciated.
