Consider how many "pilots" flew for MESA, that are now flying for Skywest. So they changed a great deal as far as being "professional," and are no longer lowering the bar because they moved on from one regional to another?

A company has knowingly hired pilots from another company. Many of these pilots only intention for working at a particular company was so they could get on at another, slightly, if at all, more reputable company, both doing flying that should be done for much much much higher wages. Use and abuse! Sooner or later, another company will undercut both of these, and it will be, hilarious. Choose wisely, pick your poison.