umm.... they aren't a problem because if you don't have the space, you can just delete something and/or go out and buy a 160GB drive for $60 or a 250GB drive for $80. And they won't be a problem in the future because if they get much larger than 5GB people will stop buying the games. It's as simple as that.
EDIT: check this out. 320GB for $86. With that baby, you could have 30 games with a 10GB install each and still have more than 15 GB left over.... I don't think installs will ever be a problem....
Not trying to be a fanboy. Of course, it's hard when you own the best console eve... dang it








