Because it's a known fact that most gamers buy a new PC gaming rig every 6 months and have to reinstall all their software each time they do so...
What is amazing is that the PC sales don't support this so most gamers must be buying their PC used or stolen...
It's a know fact too that most gamer tend to play the same game year over year and DRM will prevent them to show in 40 years to their grandkid how Spore was back then.......
/sarcasm off.
Seriously.
Renting software is how much of the software industry works outside of gaming.
So why the heck the outrage ?
Everyone on this forum is new to software or what ?