If we're looking at this in a whole, the hacks coming out are exploits in game coding, not the PS3 system.
If you look over the forums it's clear that it's not the PS3 that people are trying to hack, it's the game itself.
If Hunter128 or theUnknown post a method to do their hack, it may involve the PS3, so then they
might get interested.
In reality though, if Sony joined they would be found out.
From the quizing questions they'd ask etc. As soon as that happens, I'm sure an I.P ban can be arranged to keep all hacks working