I loved his act. Standup takes a lot of work, a lot of talent, and an equal measure of temperament. You have to have the right temperament. Onstage, you have to have a resilience and a kind of an engine. He was a little fragile onstage. If it wasn't going well, which most of the time it's not, he fell apart. It's a tough thing.
And Jerry's take on why Seinfeld was given more seasons even though it struggled at first: It had the right demographic. "If you get rich people to watch your show, they'll keep you on the air."