Steam as a platform has done amazing things for gaming and independent developers. ~70% of the revenue from steam games goes to the developers. This was absolutely unheard of in the past.
edit: I was totally wrong about trading used games. My bad.
edit: I was totally wrong about trading used games. My bad.
Huh?
https://support.steampowered.com/kb_article.php?ref=6748-ETS...
> Does Steam Trading mean I can sell my used games?
> No, only games that have been bought as a gift, and thus have never been played, can be traded. Once the Steam Gift is opened and added to your game library, you won’t be able to trade it again.
http://www.dw.de/oracle-loses-court-fight-over-software-resa...
So, when Black Ops II made a billion dollars (http://www.ign.com/videos/2012/12/05/news-black-ops-2-grosse...), steam made ~430 million? That's huge!
All the other consoles closed-certification schemes are just made to prevent this from ever happening again.