Used games take away potential from game developers to see more profits.
If PC could eventually have a service that could emulate the simplicity, accessibility and practicallity of something like Netflix but for videogames and they get the same response as Netflix from the people that opt for this service over piracy I think it is possible that both gamers and developers could make it their "go to" option. Specially if they implement DRM systematically and end up getting away with it.
This is why I believed that the Xbone's DRM, always online, "go through hell to buy/sell and used copy of a game and give developers some cut" approach made a lot of sense business-wise. I think Micro would have hurt, maybe a lot, in the beginning but in the long run, by providing more profits to third-party developers it could have seen benefit in the end. Maybe Sony would have been pressured in the long run to go that route so gamers may have ended up unable to escape this in the end, maybe.
But Micro got cold feet.
When I said that "business-wise" it made sense I didn't mean I wanted it to be that way and that that would be the best for gamers though. I want to clarify.
Nintendo is selling their IPs to Microsoft and this is true because:
http://gamrconnect.vgchartz.com/thread.php?id=221391&page=1
