Not many because few franchises get milked like the ones on the consoles. We're up to Half-Life 2 in over 10 years, there's still only 1 Starcraft. The most milked game would be Warcraft of the better ones. In 20+ years there's only 4 Civilizations.
The point is that if PC devs decide to milk with bullshit, they can easily do it on the Wii or on the PC.
Tag(thx fkusumot) - "Yet again I completely fail to see your point..."
HD vs Wii, PC vs HD: http://www.vgchartz.com/forum/thread.php?id=93374
Why Regenerating Health is a crap game mechanic: http://gamrconnect.vgchartz.com/post.php?id=3986420
gamrReview's broken review scores: http://gamrconnect.vgchartz.com/post.php?id=4170835