At the beginning, when Uber opened in France, I could understand their problem. But now, they just went to far: instead of being better to keep their business, they just want to keep their business by being the only players, leaving no choice to customers but to use them. And that's plain wrong for me...
In fact, I think that I would support an action from Uber against Taxi syndicates & French government support, either in the street or in the European Court of Justice
Disclosure: I'm a french parisian and never used Uber (yet) but used Taxi from time to time... ;)