I understand what you are trying to say here, but I honestly think you have it completely backwards. Microsoft is not in a position, even if Sony suddenly folded, to "monopolize" this market next generation.
Microsoft is a competitor trying to make their mark in the industry and do not have the rabid fan base following that the Playstation brand evokes (you could argue "yet", but that's a different discussion). I mean honestly, people on this site brag how the PS3 last year/beginning of this year was outselling the 360 while having a smaller games library AND a higher price (is THAT good for the consumer?).
No I'd suggest, that anyone who paid less than the launch price for their PS3 should THANK the 360, not hate on it. Without it's competition Sony would be the "monopoly" you fear, and I would turn this question around on you: IF the PS3 runs away with sales over the next two to three years, do you really want a repeat of the PS3 at the beginning of the next generation? (I'd ask you to leave corporate altruism out of any response too, please.)
