I am interested in some implications of her thinking. Do with it what you will. Attend, depart before the end, don't even go. Free tickets don't obligate patrons, either, by the way. Your team is winning or losing a blowout.
Performers rely on audiences, to be sure.
But audiences rely on performers too. Patrons are gambling, and investing, too. Professional performers don't expect to please everybody at all moments. Amateur performers shouldn't assume diehard loyalty beyond their inner circle. People walk out on movies without thinking twice.