I don't see a problem to solve. What you see is wishful thinking.
I don't really see how you don't see a problem occurring. Every single regional is hiring. Anyone with a pulse, and the basic etiquette, and pilot skills required can pass an interview at any regional of his/her choice. I had former flight instructors who only a few years ago did not really have a choice. There were only a few regionals hiring, and the interviews were more difficult a few years ago.
I've seen recruiters from 4 different regionals visit our little part 141 flight school. Two have set up some sort of program to help trap some pilots who can work for them as soon as they get their time. Lots of free pizza, goodie bags, and "come fly our shiny jets, we have bonuses, we have fast upgrades, we have flow through, we have travel benefits, etc."
All the airlines that contract regional feed will feel the hurt when they're handing out more and more vouchers and refunds for cancelled flights because their regional feed isn't performing. Well they can just go contract another regional, but wait all the other regionals are having the same staffing issues some to greater extents than others.
I'm not saying you're wrong
@ATN_Pilot entirely, but the way things are going right now, you can't say there is not a problem brewing if not already happening... Airlines like Spirit, Southwest, and Allegiant may be immune, but the majors that pull profit by getting people out of smaller cities feeding into their system to anywhere in the world might feel the hurt when you have people that will just drive to the nearest biggest city and choose to fly on a competitor for cheaper since they have to drive to the big city either way. Having a regional feed helps generate revenue and give a leg up in convenience compared to some airlines that do not have that business structure. If the regional model becomes unprofitable by raising compensation, then either it will go away, or it will HAVE to move in house.