First of all, I did leave (thank you very much) for a less than awesome non-regional airline job because I'd had enough. I didn't want to be a part of it any more, but thank you for assuming otherwise.
I see your point, and fundamentally it is true. However, the real truth is pilots are not going to just up and quit when they've got $100,000+ in debt for their education which they now realize is useless, seniority that they will have to give up, and families to feed.
You just make it sound a lot easier than it actually is. I'm not disagreeing that what you suggest would help, just that it's unattainable.