GDP only benefits 5% of the population? Oh really. That doesn't sound right at all given the fact that the US median disposable income is far higher than France.
Not to mention the median wage growth is four to five times faster in the US than in France. So much for your theory.
Demographically France is about 80% white. The US median white household has an income of $73,000 as of 2016 ($108,000 with a college education) and a median net worth of nearly $150,000. Both higher than France. I use the direct demographic comparison, because it would be absurd to compare an 8th generation French family to a first or second generation Latin American family in the US (the US is 63% white by comparison, with far more immigration on a percentage basis in the last 40 years than France has seen).
The US has a superior university education system. It's not even remotely close. That has been the case globally since WW2. The rest of the world has been trying to catch up and copy what the US accomplished with its universities, for decades. The top 50 US universities put France to shame.
The US has a far lower unemployment rate. The US is a high innovation economy, France is a low innovation economy, which you can witness across nearly every economic area in comparing the US to France. The US is superior to France in: manufacturing, agriculture, aerospace, software, Internet broadly, mobile, medtech, biotech & pharma, and energy. The US has a far more dynamic small business economy than France does, with a much more liberal entrepreneur culture. The US has less air pollution than France; NYC has dramatically cleaner air than Paris.
Per the OECD better life index, the bottom 10% in the US are far better off than the bottom 10% in France. The US poverty line is also much higher than it is in France.
Better infrastructure in France? Eurozone spending on infrastructure per dollar of GDP, is now below that of the US, and that's really saying something because the US level is far too low. How long do you suppose France can continue to maintain what it does have, with such persistently low wage growth, such persistently low GDP growth, such high taxes and high regulation?