It’s a hard beast to tame:
Fee-for-service is the market engine that drives decentralized Western capitalism. It’s the basis for market transactions in every sphere of our daily lives. It rests on trust and integrity of responsible seller and informed buyers. Maybe health care radically differs from other transactions, but I doubt that it does.
Moreover, we live in a democracy, where people are free to seek opportunity, act in their own self-interest, live and move where they please, and outside of Medicare and Medicaid and health plans, physicians are free to set the fees they please; and consumers are free to accept or reject those fees.