Apart from being seriously arrogant, what Sony has done is open the door for the malware script kiddies. Not necessarily to hook onto the Sony code, but to highlight yet another backdoor into Windows.
The entertainment company behind World of Warcraft has also employed serious arrogance and potentially illegal software. Best of all, though is that WoW cheats are using the Sony software (or at least the technique) to hide the information that Blizzard Entertainment is illegally gathering...
https://www.theregister.co.uk/2005/11/04/secfocus_wow_bot/
I've always been 101% against DRM, EULAs, Software Patents, I do agree that the copyright holder is due an acceptable royalty.
The thing that really cheeses me off is that any software company (in fact all of them) are legally allowed to leave behind registry entries and files on my disk after an uninstall. If I decide to give up my rights to a piece of software then when I hit uninstall, there should not be a single trace on my computer that that software ever existed. If there is, then that is theft!
My understanding is that the SonyBMG software also stole CPU cycles (despite Sony claiming it was non-intrusive). To me, that is also theft.
Am I glad that I only use Windows for Rocksim, Altacc, RDAS, etc. and use Linux full time for almost everything.