People's work preferences are shaped by economic realities. Due to an overall undersupply of physicians, the physician wages in highly desirable locations are too high to push doctors out of those areas.
As more doctors are added into the equation, wages will decrease in highly desirable areas, causing physicians to "spill over" into less desirable locations.
The underlying problem is a shortage of physicians, and this shortage directly stems from the various medical groups' and licensing organizations' monopolistic policies and practices.
Unfortunately, many physicians advocate for the continuation of these monopolistic policies and practices because these physicians value their yachts and beach houses more than they value healthcare accessibility for socioeconomivally disadvantaged people in rural areas. And that's a damn shame.
I can back up anything I said in this post with extensive data. If you don't think that American healthcare, as it exists today, is a seller's market, then you're kidding yourself.