It's personality politics. The benefit for celebs is that their fame/money allows them to "skip grades" that other politicians can't. However they lack the experience/training/discipline that a "normal" candidate would need years of experience for. It's not just procedural knowledge, but an ability to build solid relationships with legislators and foreign governments.Started with Reagan that, I reckon. I know I’m British and our politicians suck balls, but I find it totally bizarre that in a country the size of the US, the best they can come up with as front runners are Donald Trump and a senile old duffer who shits his pants.
The obsession over personalities over policies has swept here. What we would give for competent leaders!