Why should those companies get to have a monopoly on file hosting? I'd prefer to have a single system where I can put my files out there with a bit of money and

Why should those companies get to have a monopoly on file hosting? I'd prefer to have a single system where I can put my files out there with a bit of money and have them kept by anyone who is able to host them. A system like that could offer more competitive prices, and by using such a system, I'd be encouraging a world where I or people like me could easily get paid for hosting when we find ourselves with extra capacity.