Repeat
This happened in GA and now it's happening to the regionals. Soon the majors. It's all caused by the obscene lottery that resulted in a huge pool of desperate unemployed pilots all fighting for the non existent jobs for all those years. It appeared to be a huge confidence trick. Many lost confidence and quit. Most of those pilots who are left, are now ruthless and feel they do not owe loyalty to anyone.
They almost destroyed GA, and now it's the regionals turn to have one year captains and lots of continual training. That's why pilots now have to pay for training.
When the airlines start planning ahead and give commitments to pilots before they spend their money the industry may stabilise, and they may even see a bit of commitment from the pilots. Until then it's survival of the fittest and chaos. And safety problems.
What happens in GA also happens in the airlines. Later.