Every industry in the world has a second hand market. Why is the gaming industry the only one which is crying and making a big deal about it?
This sums up my feelings on this.
Whilst I understand that there is very little money filtering back to games developers. Limiting 2nd hand copies of games is not the way to change this. Whilst I am all for games developers making money (and thus encouraging the best to stick at it, improving my experience as a gamer), this won't achieve that.
If anything, it'll limit the amount of money they see - As a real life example I'll use myself: I bought Oblivion 2nd hand, having never played an Elder scrolls game before. I enjoyed it, so now I'm going to by Skyrim when it comes out. Straight from the shop.
Now, had I not seen Oblivion for a fiver at the computer exchange, I would never have even thought to invest in it (I'm an RTS gamer on the PC, a Shooter or Sports gamer on Consoles) - so I certainly wouldn't have even given Skyrim a glance.
To extend this further, I've also bought Fallout New Vegas and Red Dead Redemption, both new - simply off the back of the discovery that I actually enjoy these kinds of large-world RPGs.
So, thats 3 new games, off the back of a single used purchase.
It's one example, and I'm sure someone will have a very well thought out counter argument, but ultimately I will always fall back on the original point I quoted - Every other Industry manages to slog on with a 2nd hand market.
As a final point I'll say that on this, I'll vote with my wallet - and refuse to purchase a 2nd hand game requiring any further money from me after I've purchased it. I don't know whether or not this will ultimately encourage me to buy more games new (probably not), but hey ho - I'm one man, so I'm sure that EA are unlikely to notice in either case.