I think it's different now because people have been downloading, saving, and interacting with servers for years. People expect that stuff to last. When iCloud came out I saw a bunch of iTunes purchases from like, 2004, I completely forgot about. They weren't even on my iPod. Likewise every time I load Steam on a new comp I can download Half-Life 2, which I spent $30 on in 2005.
I think people will expect to play Pixeljunk, WipeOut HD, etc., basically into perpetuity. It's part of the deal these companies are selling with online services.