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?
You'd more likely be required to download it.