Ouch...
I thought one of the reasons that pre-owned games kept a good price, was the fact that the game is the 'key' to playing it on-line. It's not as if Sony/Microsoft has a BIG problem with pirates (like the PC platform). Microsoft charge an annual fee for Live Gold (allowing you to play ALL games on-line vs others). Pricing this to individual games is not a good move IMO, especially as Sony fans have said on-line gaming is 'free' compared to the Xbox offering which makes it a better offering.
What what I've seen and heard of the on-line experiences of both the 360 and PS3, the 360 wins for gaming hands down, maybe Microsoft got it right with their annual fee for access to all of it....
Will be interested to see what people make of this move...