I'm replying to a post about high school stadiums, which are generally owned by a public school or a town. So it's a slight whatabout to the farther-jumping whatabout above me.
And I'd bet every penny I have that the average opera or theater attendee is significantly up the class scale from the average high school football game attendee.
It's a huge difference, not a minor one, and not one divided by class like you imply.