Also, I don't think they're particularly opposed to owning their practice. I can understand them not wanting to manage a business. But for that problem, they can hire professional managers. Which is basically how hospitals work; if the doctors all want the CEO replaced, he gets fired. There's a physicians board and the trustees tend to listen to it.
So you're proposing to create a privileged class of investors with MD degrees who are protected from competition and will be able to earn above-market returns on their equity? Why would we want provider organizations to have a higher cost of capital? Makes no sense at all.
Yes they will earn above market return on a lower capital base with medical shares in medical practice trading closer to book value - and the economics are the profit share not equity value of the firm. Earning $250k/yr on a $1m capital contribution requires a whole lot less rent seeking than earning the same $250k on a $5m share purchase.
If you want to look at it that way there's already a much worse problem; a "privileged class" of service providers has a government-enforced total monopoly on the market for medical practice!
Then they should work for the doctors who do.
Also, I don't think they're particularly opposed to owning their practice. I can understand them not wanting to manage a business. But for that problem, they can hire professional managers. Which is basically how hospitals work; if the doctors all want the CEO replaced, he gets fired. There's a physicians board and the trustees tend to listen to it.