No way will Sony implement a system where a disk can only be played in a maximum of 5 machines ever for the "lifetime" of the disk.
That would mean video game rental for PS3 games would die. Whereas it would keep on trucking along for 360 and Wii. That would be a HUGE mistake in terms of longer term console sales, especially if carried forward to the next gen of console. Like it or not game rental is a fixture of the console gaming industry, and unless all console makers kill off game rental at the same time then one console maker isn't going to go down that route by themselves.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix
