This is especially true in the U.S. There's no market as such because there's no pricing signals. The barriers to entry are super high: education and licensin

This is especially true in the U.S. There's no market as such because there's no pricing signals. The barriers to entry are super high: education and licensing of doctors is extremely restrictive, while construction of hospitals requires prior political approval ("certificate of need"!). All the HMO/PPO in-network thing also adds opaqueness, and discourages any negotiation by the consumer. This is madness.