Lawsuits aside, there is enough people that you could just declare a boycott of a gaming convention if Ubisoft was scheduled to attend. A large enough group and not only would the other companies in attendance take note but the company putting it on.
Then again you could just attend and troll your pound of flesh back out of them.
I'm not sure which I'd think was funnier. People boycotting or dozens of people pelting the Ubisoft rep with ******bags soon as they begin speaking.