The RLA has nothing to do with the pay problems. It is the seniority and longevity systems. If either of those two could be transferred from company to company you would see people bail from the low payers faster then they could raise the pay. Even if payscales differ people aren't willing to give up seniority. Also if you have 7 or 8 years of longevity there would have to be a very big pay scale difference to go back to 1 year.