I'll have to agree with what Azar said in the PS3 Revealed Thread

Quote Originally Posted by Azar
That rumor's been going around for months. They just denied it again.
Quote Originally Posted by Azar
SCEE PR manger Jennie Kong blasted the rumor as " false speculation." "PlayStation 3 software will not be copy protected to a single machine but will be playable on any PlayStation 3 console," she told the Guardian.

That's enough for me. Sure, Sony could implement this anyway and make a liar out of her; we all know that companies change their positions on things and do their best to pretend they've never denied whatever it is they're doing. But given the user backlash such a system would incur, it's extremely unlikely that Sony would go forth with this program.