Really, who does it hurt? In the case of games like Syndicate, if you're buying it you're buying it on the first day anyway. A used purchase only goes down by like a dollar, maybe two, and sits at that price for MONTHS.
By the time there's actually a big jump in price, the new copies of the game are already low enough. Bargin bin buying for rare games is the only case where the effects of this are catastrophic, and nothing that goes rare quickly features an Online Pass anyway.
Come on, who's buying Kingdoms of Amalur used NOW? In the end, this ensures the money goes into the developers pockets and not into the pockets of the retailer who's basically making a killing on all of this.
'Course, maybe I'm missing something. Who knows. But it seems like a stupid thing to be worked up over when we still have actual horrors like intrusive DRM that requires you to be online in order to play a game at all.