They may have (more than once) and the ones who pay the bills said, "forgettaboutit" and that was that.
Could be.
But I do recall having a conversation about pre-flights with one of my roommates in my commuter apartment, and she indicated that there was not a heavy emphasis on pre-flight safety checks with her airline. She didn’t even know anyone that took “that stuff” seriously. The big concern for them was catering items. They didn’t even conduct briefings prior to flight, and that totally surprised me.
Of course this was prior to 9/11, and I imagine that things really stepped up industry-wide after that.