Mark,
It is the same everywhere, I do believe. It's a very difficult business, for sure. I look at it this way. Just make as many calls as you can (sales) and eventually you will find a good enough base that really appreciates your talent. The musical chairs of ADs is the norm.
Like Donny said, be as good as you can so they can't ignore you (or something like that lol).
My earnings have increased dramatically when I started dumping the facilities that really could care less about their people.
Fortunately, there are many new places that continue to pop up. If a really good musician/entertainer can't stayed employed nowadays, something else is wrong.
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Yamaha 920 / Yamaha Stagepas 100 BTRs / Senn e935 - LIVE
Roland RD 2000 / Tascam DP24sd / ATEM switcher - STUDIO