Do you work in the live entertainment industry?
I do. I know the difference between being hired for a gig and being hired full time. They aren’t the same thing.
No job on the planet comes with a guarantee.
Im sorry you are hanging your whole argument on insisting “gig” meaning a singular event instead of what everyone knows the conversation is about. “Their show ends, or their job finishes, and they know they are rotating out unless they find a new chair to sit in.”