Can I Return To Permanent Work After Going Freelance? (Blog)
Whether a person opts to be a freelancer or prefers to be a permanent employee is entirely a matter of choice. There is however absolutely no reason why you cannot switch between the two.
I agree that it is a matter choice. No one is stopping you from becoming what and when. The problem is, once you get used to freelancing, it could be very difficult going back to permanent work, or vice versa