This is a month old, but Sony filed a patent for a technology to block used games.
If Sony and Microsoft do block used games, I have absolutely no interest in those consoles. It's not just the cost, but also the fact that I still buy plenty of games for dead consoles. What If I discover some awesome hidden gem on the PS4 after the system is discontinued? I'll never be able to play it?
If The HD twins (Sony/Microsoft) disable used games, I'd need for them to make concessions in other areas like price. I'd very rarely buy a new IP for $60. The only reason Steam can get away with it is because the PC platform charges developers no royalties and the fact that there are no used games gives them pricing parity.