Earlier quoted context omitted.
I don't know if it matters but I have a limited company and am an employee of said company, which means I deal with taxes on my own and can perform work for (almost) any company in the world - I just invoice them like any supplier. Maybe this is the future? Though some companies would rather you were their employee I suppose.
I think an awful lot of employers would prefer you were a contractor; in the USA at least, it is the IRS/government that prevents this from happening more by putting the fear into said employers that they will be fined and forced to pay back taxes for anyone improperly classifying people as contractors when they are in fact employees.
In France, companies also like to contract out a lot, either to "freelance" or regular outsourcing shops.
The reason I put freelance in quotes is that there's no such thing here, legally. You have to have some form of company, through which you invoice the client.
But then, whenever you want to get the money out of the company to pay rent and eat, you'll be hit by, more or less, the same taxes the employer would pay. For a given unit of work, it's not cheaper to contract out, there's no real tax loophole.
As far as I know, the state doesn't really care. It may even prefer it, since contractor rates are usually higher than salaries, so they get to get more tax.
The only situation where it would crack down on this is if the would-be employee complained. Since this is considered a "precarious" arrangement, if the contractor can prove that they're basically an outsourced employee, they can ask to be converted to an actual employee and the state will back them up.