It might be interesting for some that you dont need to own the game to help. Especially citizens of canada, france and germany have huge tools at their grasp to push this issue into deliberation.
More precise: the game in question is only the posterchild of the campaign because it has by far the biggest playerbase of the hundreds of games which have been destroyed this way but were too small for any significant backlash.
The idea essentially is that if enough people file legally correct complaints (they need to adress several issues, hence a short written tutorial for each country) the country in question will be forced to address this (which apparently has never been done due to the aforementioned reasons).
This is pretty literally the first real chance at this and it can lead to precedent in ownership again being the fundamental right that it once was.