Good luck, however, winning in court to enforce your license.
Good luck, however, winning in court to enforce your license.
Oh, and while the DMCA requires DRM to be "effective", that has proved to be a low bar.
More seriously, EULA case results are mixed, and Wikipedia's somewhat sarcastic first sentence of that section as I write this is broadly correct: "The enforceability of an EULA depends on several factors, one of them being the court in which the case is heard." Maybe there's some other legal doctrine about contracts that would knock this out, but it's not immediately obvious to me that this couldn't be done. (Not that it will, of course.)
[1]: http://en.wikipedia.org/wiki/End-user_license_agreement#Enfo...
I think the "effective" in "No person shall circumvent a technological measure that effectively controls access to a work protected under this title."[0] probably means something more like "has the intended effect of" rather than "does a good job at."
[0] http://www.law.cornell.edu/uscode/html/uscode17/usc_sec_17_0...
The stronger the anti-misappropriation measures of copyright law, the stronger the sharing (and compulsory re-licensing) provisions of the GPL.
Playing other legal regimens against themselves in a similar fashion is a creative and often effective strategy.