I'm saving this post, commemorating the occasion when Dion gave a straight answer that is on topic!

Now then, the following two sentences appear one after the other in AMA PDF Doc 500-H:

"1. As a benefit of membership, AMA’s insurance protection will extend to those members
who provide flight instruction for a fee on a casual basis.
2. This coverage does not extend to any commercial operation or business pursuit."

Apparently AMA knows the difference between being paid for a service on a casual basis and a commercial operation or business pursuit. What leads you believe they would not make that same distinction when the service provided is performing in an air show? Can you cite a policy statement from AMA, or recount any precedent?

Abel