There used to be a lot of acts, which was good, because people don't want to see the same act every night. But, you don't want too many acts, you don't want to over-saturate it.
If you learn one thing from having lived through decades of changing views, it is that all predictions are necessarily false.
I cannot bet my life on it, because I was not involved, that Alex Rodriguez ever used steroids. But in my opinion, I suspect he has, yes.