When does Sony reach the point of no return in Japan?

[stewacide]

Why should Square-Enix sacrifice their biggest franchise to help Sony sell systems? If the FF13 games are still a year or so off, it seems to me the much smarter decision, in terms of Japanese sales anyway, would be to move the main series to Wii, and make whatever they've been working on for the PS3 a spin-off of some sort.