ditto
If you haven't noticed by now Microsoft has one thing on their mind at ALL times and thats $$$$ no what makes more money a $60 game or a $400ish console plus a $60 game. Now if they release the game on xbox only they'll make a lot of the latter and therefore a lot more money. Second thing on their mind is to win the race for the next gen console and like Insom said people arnt going to buy the console if they dont have to its expensive, most people dont like buying expensive things, unless its a girl and shoes.
...looking back i just realized i took Insoms short little paragraph and said the same thing three times bigger
yea... you could have stoped at ditto
although taking something someone has said and making it into a novel is something Ive been guilty of as well.
But I wouldn't doubt it if a PC version went live within 1-3 years after initial release, by then Microsoft would have turned a profit from the game, so they start milking every last penny they can get out of it, which probably means a PC version.