I think Sega is merely finding that the Wii audience best suits many of their franchises. Very importantly Sonic and it's spin-offs. Sonic sells vastly better on Wii than the HD consoles. I can't even imagine NiGHTS or Samba or even HoTD having even been made if not for Wii.
So far Sega hasn't had much success on the HD consoles, although I doubt very much they'll stop trying there but I think Wii will likely become a bigger and bigger part of their development plans.







