I've been wondering about these questions for a few years now. Regardless of how much the insurance companies cheat physicians, especially in primary care where they try to pay you so little you can't even stay open because they don't want to value mental/analysis part of what you do but only procedures, few physicians opt to attempt the "Direct Primary Care" model (That's a Concierge practice priced for the average person.) Or even just to drop the lower paying plans. Now the larger plans have begun paying less than the smaller plans.
We began trying to build this back before President Obama took office, or even planned to run. We had very limited success (not really sure I can call it success) and the Affordable Care Act torpedoed many efforts since many of those uninsured may now be insured.
But what I think needs to happen is that PCPs have to build up a self-pay business to the point that they can drop plans that don't pay them properly. Enough so that their members can't get an appointment with a network doctor. That is the only way to get them to respect you...find a way to effectively use your power en mass and use it against them to effect their bottom line. Because they are affecting yours.