I just wanted to point out to mastroego that he's not the only one worried about the "20 years from now" problem.
The entertainment industry today, and the various DRM methods is employs, are so full of fail that I don't trust anyone anymore. I've seen Walmart, Microsoft, and Yahoo shut down DRM'd music stores, rendering their customers unable to transfer files or even play them in some cases. I've seen Amazon delete legitimately purchased ebook versions of 1984 from customers' kindles. I've seen EA and Microsoft shut down online multiplayer for games only a few years old. Is it any wonder some people don't trust publishers with the power to deny them access to their games? Nowadays, if I can't play it in a shack in the woods with nothing but a computer, a generator, and the radioactive fallout left behind by the destruction of human civilization, then I consider it a rental and refuse to pay anything more than rental prices.
Last week I reinstalled Alpha Centauri, and was pleasantly surprised to discover that it has no disc-checks or activations of any kind. Ten years and one company buyout later, the game can still be installed and played without issue. And if I'm still playing Alpha Centauri over a decade after its release, who is to say I won't want to play Elemental or some other new game a decade from now?
Fortunately, Stardock does not retain the ability to mess with my games after I purchase them. If I buy something on Impulse, I own it just as much as I own my copy of Alpha Centauri. I don't need to run Impulse to play, I don't need to activate except to download updates, and I can make an offline backup of my games whenever I want. I could, in theory, install this backup copy on a non-networked computer in a generator-powered shack in the middle of a post-apocalyptic hellhole and blissfully play the final version of Elemental until I die of radiation poisoning. The only way they could possibly make this system less restrictive is if they posted a full download link on the main page with the words "I'M A NAUGHTY TREASURE GALLEON PLUNDER ME HARDER" in giant, flashing, neon-colored script.
So please forgive us if your original post seemed to us as absurd as accusing Gandhi of being a bloodthirsty imperialist. Stardock has a strong reputation for being pro-customer and opposing exactly the kind of DRM you hate, and even went so far as to propose the Gamer's Bill of Rights. I expect we'll both still be able to play Elemental 20 years from now, without needing to ask permission from anyone.