Have you missed the fact that Sony has already announced their position last week?
Sony won't block used games at a system level AND the console won't be required to be online to play games.
BUT if a publisher wants to block used games and ship them with activation codes they will allow that.
Sony is not against used games but they're leaving the option (and the responsibility) to the individual publishers.
So people suggesting that anti-used companies will be closer or even exclusive to MS are totally missing the facts (notwithstading that no one can afford to develop a big project just for a single console in this age).