The DRM in Spore actually made the game easier to pirate. The game is natively designed for one copy to be able to run on multiple PCs simultaneously. So the only thing required to pirate is to dupe the game into allowing unlimited simultaneous installs/instances rather than the 3 it was setup for.
I also think just this particular game in general lends itself very nicely to being pirated. It's extremely popular but not so much with the hardcore gaming crowd who are more likely to want to "try it out" rather than buy.
The game also sold a lot more (and faster) than others on the same list so you would expect there to be more pirated copies too.
I think by putting DRM on games it causes people not to buy them and maybe even pirate them. Plus with these games they also download SecureRom(or something like that) on to your system causing me to wipe my hard drive and to reinstall games(which i can't with DRM)
Spore tops the list and blows everything else out of the water, with 1.7 million pirated copies. 2nd place wasn't even close. Maybe EA will see this?
DRM is the worst. For a company to protect there software valve has without question the best. Make your money of the program sales and force all users to connect to your server. Force upgrades to make the server side near impossible to emulate. Valve and guildwars has without question the best anti theft designs in the gaming industry.