I understand your point of view, but honestly french prices are too expensives when we see our life level (I said that after living in others countries and going in Germany monthly) and certain products have ridiculous duties (Honestly I don't think that the price of cigarette help people to stop smoking, and can you explain we oil's price are so different between France and Luxemburg or Germany for exemple). I think in a wonderfull world, this overture to the others countries would help to cheap some unfair prices, and help poorer country to elevate their life conditions, unfortunatly it's not working like that actually.
And honestly I think that many people in France try to buy French products in priority, we made enough add for them. The others havn't generally enough money for them and don't allow them to buy cheaper products because they are foreigners is a way to increase their money problem.
But I'm agree to say that European buraucrats are totaly useless about that (and almost every other points...).