The relative lack of piracy of console games is only going to Last a couple more years (if that). Once DVD burners come down in price...
You can already find ISO images of most modern console games on the internet. The only real way to prevent piracy (other than requiring a constant internet connection to authorize the running of the program from a central server...) would be to make the games come in a form that is very difficult to duplicate, such as game cartridges, AND to not have a hard drive on the console. The introduction of the hard drive + internet + ethernet more than anything just opens up the console to piracy to no end.