If we operated in a free labor market, this problem would not exist. The RLA allows wages to stay lower than they would otherwise and encourages prospective pilots to not even enter the profession.
There should have been many small corrections over the last decade, but now we are gearing up for a huge correction. At the rate regional pilots are leaving and are being hired, the size of the regional work force will shrink by an increasing percentage every year. Within 5 years there will be just a few thousand regional pilots left if nothing changes.
Even adding another 10-20k per year will do nothing. Most want mainline jobs that pay even more. The point that it would be viable to stay at a regional is the point that it no longer makes sense to operate the Arline as the cost advantage will no longer exist.