Every country wanted something out of the EU other countries may have not agreed to, the French wanted agricultural subsidies. If you have 28 countries in a trade union, you're bound to have disagreements.
The government in the UK was particularly enraged about FTT (Financial Transaction Tax) a couple of years ago & that is what has actually led to this whole referendum thing. Every country is good at its own things and they wouldn't like it if was attacked. Imagine a tax on manufactured exports, Germany would have a fit.
It's not like there are policies in the EU that attempt to reduce trade in financial services such as the tobin tax on financial transactions. Italy enacted the tax and its reduced trade quite considerably.
Every country has it's own fight in the EU, it's not just Britian, France had the subsidies problem, Greece had its bailout problem.. each has had its own. There isn't a reason for Britian to be treated differently.
Sweeping generalisations you say? Have you not asked Frenchmen their opinions of the UK in the EU? There are a couple of firms that have done unbiased polls all over the EU and Frenchmen quite simply do not like the UK in the EU, some things just don't change.
CDG is long dead but he is still relevant as he chimes in with the unchanged opinions.