If we really did have a ‘free-market’ economy, every business would have the same rate of profit and it would be equal to the return on a perfectly risk-free security — so, in the U.S., not more than the 10-yr. government bond, currently yielding just under 1.9% per year. What ‘capitalist’ wants that?
As it happens, I do have a solution for the zero-sum problem — a “democratically distributed income.” It would be created as needed. It would form the supply of money (as currency) for the economy. (If it matters, I do have an M.A. in economics.)
If curious, there is “A Truly Great Idea” in Data Driven Investor here in Medium. Links for further reading are provided at the end of it.