This is why closed-system architectures like Apple's App Store are so hated.
This is also why folks like me will never adopt Apple's stuff for things like movie, music, and software...because Apple can just reach in and disable/delete my stuff like Big Brother. If I own something (purchased or free) in physical form (book, dvd, painting), nobody can come into my home and take it away stating I had it for awhile and now it's time it disappears.
go to google...
You can always save you apps to you itunes library. That will never change. The iCloud is just another way to syncing between devices and backing up your stuff.