1) This is clearly bullshit designed to distract from more pressing issues that the French government can't solve or is unwilling to solve.
2) France's notorious protectionism, while immensely irritating to outsiders, does a reasonable job at preserving French language and culture, and creating a local vacuum for French native solutions. Trade and culture protectionism has a long-history of working quite well in many countries seeking to create national identity and industry when used correctly.
These two riffs will continue to get played, with #2 reinforcing #1 while necessary, to try and encourage native French solutions. France is under tremendous economic and cultural pressure from better performing regional partners like Germany and the U.K., and globally by the U.S., China and Japan (pick whichever you think is better performing in terms of economics and cultural expansion).
It kind of sucks, but it's also why, when you go to France, and even Paris, you know you're in Paris and not yet another cosmopolitan mega-city. It's also part of the reason why French culture and ideas continue to be interesting and exportable.
Much of this of course is France's continued decline as a global power. London, New York and Paris used to be a given global triumvirate. And Paris's membership in the top-3 isn't a given any more. It's now in a mix of second-tier alpha cities with Tokyo, Beijing and Dubai.
Outsiders look at this and say "of course Paris is in decline, this kind of behavior is why". Tighter global integration and more openness seems to be the way to the top and maintaining it. But for French leadership, losing cultural identity is not worth it. What if the world thought La Défense = Paris and the rest of the city was just some curious suburb? Is this [1] something that anybody cares about?
1 - http://fc03.deviantart.net/fs70/i/2014/067/b/7/skyline_la_de...