Ultimately it would be political. It would wind up being a big voting block that no politician would want to confront.

Suing every Dr also affects all nurses and healthcare workers and hospitals in general. All those entities ultimately work under the umbrella of a "doctors orders", I don't mean that from a liability standpoint....but rather they would "support" the Doctors they work under and wouldn't permit them to be thrown under the bus as it would affect their career/profits.