They are too busy salivating over the E-175s Mesa is supposed to get from United that Mesa won't have the personnel to fly.
It is going to be interesting times in the regional world the next few years. It's quite possible there will be a lot of casualties, and not necessarily the ones you would have predicted a few years ago.

An actual shortage of qualified people willing to work for them is rather a new experience for most regional management teams and quite a few might not be up to the challenge.