The goal might not be permanent restriction but rather practical discouragement. Companies rarely care what happens in the distant future.
If a restriction which asserts non-ownership is imposed on users even temporarily, it can result in potential profits for as long as it stands. By the time it's found to be unenforceable and/or unfair, the people behind it might have made their money and even moved on.
The more we acquire, the greater our chance of disappointment. Less is not only more. It is also more fulfilling. "Schmuecke dich, O liebe Seele."
Last edited by Prestidigitweeze; 10-26-2012 at 03:39 AM.