>For example, say I buy a game and my friend also wants to play the game. In the past, I could just give them the disk and we both enjoy it.

the difference being that only one person could enjoy it at a time. the math is a bit different when one person can put a copy of their game up online and let thousands of people enjoy it for free at the same time.

there is a happy medium somewhere between intrusive DRM and demanding games be free.