lets think about this logically for one moment; Demigod has zero DRM save for a key-check when playing online and patching.
now, if non-checking patches were available, pirates would be able to have updated copies of Demigod for free. couple that with powerful VPN siutes like Hamachi and GameRanger then no one would ever play online at all; the entire community would exist in VPN, pirates and all.
there'd be no way to check who was a pirate, and pirates would happily be able to play along side legitimate buyers.
oh, and ROFL Joy; you don't know much about Introversion now, do you? all their stuff is available on Steam! oh heaven forbid. are you going to stop playing Defcon now?
before you go and cry more about the patch system, and how Demigod is a multiplayer game, and you can't play; did you even do any research into what Demigod is before you paid for it?
may i ask, when you bought WoW did you complain because that was online too?