Assuming artists could predict demand and supply (versus spending time creating music), if they become popular, with this simplified logic they should only play large venues (which Live Nation controls) on back-to-back nights in primarily big cities. And if they were mainly concerned about money (which some are) then they'd only play the largest cities every year. There are only so many tour days in a year, how would they split their time?

That's not a music culture I'd want to be part of.