profitable? you get 50% tax in most western countries in europe. its nearly impossible to make more than a FAANG-level company with that taxation
I would still consider it profitable compared to being a full time employee in Europe. Besides a higher rate, a contractor with his own company can benefit from all kinds of tax advantages a regular employee can't.
tbh I am not sure it is better money wise. for sure you get the freedom tho but also the stress of finding new customers