Well I shall talk about the PS3 in specific coz there are big MMOs coming to PS3.
The PS3 right now has 3 Major MMOs coming it's way with DC Universe, The Agency and FF XIV and when I mean major, I mean games that have enough interest right now.
I'm more leaning towards the opinion of that MMOs definitely have a chance of succeeding on the PS3. Here's why I think so:
1) PS3 will support Keyboard and Mouse input.
2) Graphics is not a major factor of MMOs so PS3 Versions and Mid Level PC graphics will msot probably be very similar
3) PS3's PSN is open and free for everyone so anyone can sign up and jump right into the PS3 MMOs.
4) Paid Subscriptions are not a problem as long as they're not so high. Obviously people who are willing to play the MMOs are aware that most MMOs are Pay to Play and will Pay to Play and therefore this won't become a major issue.
5) Cross Platform Gaming will be available in the MMOs.
The reason why MMOs haven't been so successful on consoles is that there just hasn't been much effort put into making console MMOs and there is a major lack of MMOs on consoles. So if Sony can succeed with the 3 Major MMOs for the PS3, I think you'll be able to see more devs seriously considering Console MMOs.
