The type of concert doesn't even matter. It's about how a church is operating, and the revenue being generated. Massive multi-million dollar megachurches should be responsible. I think that includes having their tax status re-evaluated if they've evolved into a full-on business.
What classifies it as a business to you?
It's simple to me. A business earns revenue, and can also generate income from other sources. Megachurches are crossing the line from a church to a business. Income from real estate investments is not offerings, for example. Crossing that line should mean looking at a new tax status.
Churches pay performers to appear by having offerings and or selling tickets and then paying the performers to appear. Money is also used from that to clean the church and provide food and refreshments. Those things do cost money.
I don't get your point. Yes, putting on a concert costs money, and they're making lots of it. Operating a performance venue is a business though - that goes beyond the function of a church. That's why megachurches making millions should have their tax status re-evaluated. They're now a business.