Express Jet and Trans States died in a different environment where their capacity wasn’t needed.
Things will be very different when needed airframes are parked because of captain/lca shortages.
Whichever airline or two falter first it will quickly become a positive feedback loop with increased attrition and inability to hire.
And yes experienced regional pilots will do anything to avoid a lateral move… but that’s the problem. A shortage of experienced regional pilots. The 300-900 hr guys will probably get a lot of money thrown at them by whoever is left standing.