Please tell me you're joking.
France is notorious for having a very cumbersome and over burdening fiscal and administrative system. From direct personal experience, you better off being an employee than being under the status of self employed. The hassle you get from the tax office and employment agency totally overweight the flexibility this status should offer. There is a reason Paris is not the start up hub it would like to be.
Sure you have the odd example that shows this is still possible, but in an industry where you do not need to be on location to produce some work, the incentive to stay in France and develop a successful start up is lessen by the appeal of the US and Canada and to a lesser extend the UK.
Monopoly capitalism is just as good at suppressing new business as government bureaucracy is. Markets with a strong de facto monopoly - like web search, commercial operating systems, telecoms infrastructure, and so on - are completely closed to newcomers who can't access billions in capital.
You can be sure there are some very strong business opportunities in those areas, but because capital is so concentrated they will never make it to market while the de facto monopolies remain.
>If you let the average person become 1.10x better off, and you do so by letting some people become 10x better off, are you ahead or behind?
Also known as the "a rising tide lifts all boats" argument." Sometimes dressed up as "trickle down."
Unfortunately Piketty's data proves that the world doesn't work like this, so I'm not sure why you think the question is relevant or interesting.
The rising tide does lift all boats. The data only shows that return on capital will always outstrip wages as a way to accumulate wealth.
EDIT: It's unfortunate that the downvotes have chased 'logicallee from the arena. I have found that unwarranted downvotes have a way of correcting themselves, given a few hours on a lively thread.
That's why Piketty collected A LOT of data and wrote his book.
For instance if 40 of your friends go in to a casino and all pick a different number on the roulette wheel and one of them hits, it does not mean that it was a good method.