it still wouldnt stop sony or another gaming company to create a game of similar format/theme as halo.highly dubious, seeing as not only was halo published by MS game studios but since the MS/bungie split MS has bought the rights to the franchise.
it still wouldnt stop sony or another gaming company to create a game of similar format/theme as halo.
One of the big sellers of the xbox was halo so it would be a positive move for playstation to also have a game that was so involving.