Most doctors don't want to be business owners. It used to be that they were kind of forced to operate in partnerships but now most choose to become employees. This might be worse for patients but for better or worse there's no going back.
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.
Gasp! The horrors!