I was surprised too when I heard that there was a way to edit cue sheets for PS1 games (on this site, mind you) to add copy protection. Sounds stupid, you install a mod chip to beat the protection and then turn around and add more protection!!

Seems now adays any protection can be beat, it's just a matter of how much work you want to put into it. The ordinary joe might not know how, or spend the time to figure it out.

As for protecting PS2, sounds like experimenting is the best way...I suppose there is no software out yet, much like the different softwares seen on this site.