Ok, lifetime (estyimated from existing VG chartz numbers)
No surprises here.
Nintendo Wii (Released November 06)
130,000,000 - 87,000,000 = 43,000,000 Third Party Software
2.52m per month
EA: +-7m
Activision: +-5m
Rockstar/2k/Taketwo: +-2m
Ubisoft: +-5m
Xbox 360 (Release November 05)
125,000,000 - 30,000,000 = 95,000,000 Third Party Software
3.27m per month
EA: +-15 million
Activision: +15m
Rockstar/2k/Taketwo: +12m
Ubisoft: +-10m
Sony PS3 (November 06)
54,000,000 - 16,000,000 = 38,000,000 Third Party Software
2.24m per month
EA: +-6m
Activision: +-5m
Rockstar/2k/Taketwo: +-4m
PS3, 360 Combined for EA, Activision, Rockstar/Taketwo, and Ubisoft are very large and would line up with the development we are seeing. Acti and EA have more capital so they can invest in both platforms heavily; which has paid off for both. Ubi and Taketwo must avoid expenditures (due to previous losses) and have existing franchises that fit in well with HD consoles and PCs. HD Consoles can pay off big for large to medium sized developers with existing franchises but can be risky for new, high budet IPs.
Wii has a very strong showing from Sega, Capcom, Lucas Arts, Atlus, Majesco(relatively); these companies have either existing family friendly franchises or no franchises. Small size of these companies also works well with Wii's lower development cost. Which would explain the support form those developers. Wi, as expected, seems to be a great platform for smaller developers but not for mid-sized companies with successful franchises that rely on graphics or online play.
THQ would be doing fine from their success with WWE, Sponge Bob, etc. on both HD consoles and Wii, but are heavily vested in Saints Row 2 (which may not do so well with GTAIV out).
I would cite regulation, but I know you will simply ignore it.
