about the fact that freelancers have more free time, I doubt very much... many people I know the guys who work on themselves - they work 25 hours a day.
You say that these people have super abilities !! Miracle people just !!! Well, no such!
It is clear that 25 hours is an allegory. Its just that people who receive an order and work on piece-rate payment for a job specifically done are valued by orders and try to do everything as quickly and efficiently as possible. Therefore, they work almost around the clock.
For this, they love freelancing, because people do everything as quickly as possible, where in real work everything is much longer, and then perform, for example, in a day