It's clear you don't want companies to be able to protect their games but many of us do.
And what incentive would there be to actually BUY a game if pirating becomes so easy (if there's no achievements, multiplayer OR you want to help the developers) that most people can do it?
First of all, DRM is an annoyance for legitimate buyers of a game. How annoying, and how tolerant the user is is quite variable, but it in no way is a Piracy deterrent, and is only linked to piracy as a way to tighten down the hatches more. DRM is quite successful at neutralizing second hand sales though, which is where it really shines.
The OP has stated multiple times that his problem as Gamestop having his personal information. If gamestop wasn't buying Impulse, He'd be enjoying GalCiv2 right now. But, since GS owns (or soon will) Impulse, and it is impossible to play GC2 in any reasonable fashion without it, then he see's it as DRM he isn't willing to settle for. There's nothing wrong with that, and I wish more people would take his attitude on the subject.
The incentive to buy a game is that it is a good game, with good support, that you will always be able to play no matter when or how you want to. Pirating is ridiculously easy. Everyone could do it using nothing but google as a guide. Everyone. And that includes handhelds, consoles, etc
That said, if you enjoy a game you should support it and it's developers. Pirating does hurt the industry even if 1 Pirate doesn't equate to 1 lost sale. People who would've bought the game, but didn't because they pirated it hurt the industry and are bad for everyone involved, so don't mistake my stance for pro-pirate.
If things change (like the distribution branch of that developer get sold to a company you've had many misgivings with) there is reasonable cause to be weary, or avoid the situation all together. Pirating was only brought up because of silly drm and who's pulling the strings behind it. OP was okay with Stardock, but isn't with Gamestop, so it's a lost sale for legitimate reasons. The OP wants to buy the game but can't with his objections, he didn't say "Even though I could buy it, I'm just gonna play it for free." If my personal information was plastered for anyone with the time to look it up already, I'd be concerned with Gamestop as well, but I haven't paid more than $5 for any stardock game since Twilight, and don't plan anytime in the near future, so it's not that big of a concern to me. Plus I use fake information everywhere possible so it wouldn't do too many people much good.
Stardock as a game company has been declining since the release of Demigod, and their public opinion and credibility went from gold to pyrite. Of course, I was around when EA was the saving grace of the market and if there was any content that could be added post production, it was always free.