Why are there no right wing comedians?

Not really a post as such, but read this little article in the New Statesman and wanted to share a quote by one of my favourite comedians, Mr Stewart Lee:

The African-American stand-up Chris Rock maintained that stand-up comedy should always be punching upwards. It’s a heroic little struggle. You can’t be a right-wing clown without some character caveat, some vulnerability, some obvious flaw. You’re on the right. You’ve already won. You have no tragedy. You’re punching down. You can be a right-wing comedy columnist, away from the public eye, a disembodied, authoritarian presence that doesn’t need to show doubt. Who could be on a stage, crowing about their victory and ridiculing those less fortunate than them without any sense of irony, shame or self-knowledge? That’s not a stand-up comedian. That’s just a cunt.