I agree with Maximus. Keeping it on one console is a little selfish.
MO was one of the main reasons I got my PS2 but they converted to XBOX after I got it.
Even though it SHOULD be on other consoles I won't complain.
I'll just by a second hand XBOX in later years when the PS3 craze starts and by a fourth hand copy of MO.
(Yes I am a lazy, cheap A$$hole
)