interesting!
I am personally in support of the idea that games sould be local network playable without having to buy a cd for each machine (Microsofts Age of Empires is a reasonable example of what I mean). For instance, I have two computers in the same room for this purpose.
Considering it unfair that I should be expected to buy a second copy of a game I already own, I tried copying the diablo two 'play disc' isuing ISO buster. I copied the cd in RAW format to ISO, replacing the bad sectors with identicle bad sectors. I tried both mounting that image as a drive using Daemon Tools, and writing the ISO to cd, and in neither case would the game run. It just wouldn't recognise the disk! Darn that Diablo 2! I only bought it for local network play!
What REALLY bothers me, is that I acctually used this method to copy a modern game as a backup some time ago, and it worked perfectly! (I do have a tendancy to scratch my cd's to extinction!).