Isn't that exactly how festivals work? There are 1-2 headliners that are well known, and 20 other obscure bands to fill out the weekend. You can buy a ticket for a day, but you can't only buy a ticket for a particular performance.
Tours by mega-bands like U2, Taylor Swift, Coldplay, Rolling Stones, etc. can cover 50+ cities and make hundreds of millions. The combined revenue they generate probably dwarfs festivals. But festivals happen annually and those tours do not.
