"Investigators indicted Uber's two top executives [Thibaud Simphal, Pierre-Dimitri Gore-Cody] in Paris on a raft of charges, including enabling illegal taxi services, that could bring fines and jail time. After holding them overnight, prosecutors set a trial date for late September, lightning speed in a country where suspects can remain under formal investigation for years." - Sam Schechner, The Wall Street Journal, June 30, 2015. Here is the article.
Both French law enforcement and French taxi drivers are playing it very tough with Uber. In addition to the indictments, there had been violent protests in the streets against the ride-share company. It could be in France that Uber's cool is shaken. Currently it remains defiant in France - and in most locations around the world.
If Uber blinks in France, other nations might step up their legal and populist attacks. But, Uber might respond by simply laying low in France for a while and then returning when it perceives things have cooled down.
Uber might be the most formidable "enemy" traditional institutions, ranging from legal systems to the old-line taxi industry, have confronted in a long time.