I firmly believe, only because I've been doing this for so long, every show takes three years. 90% of them don't get three years. It just does. It takes a long time to build a community, build a friendship with your characters. It's hard for people to grasp on and make them care about you.

This quote means that it can take several years to create a successful television show. Many television shows do not make it past three years because it is difficult to secure an audience and make viewers care about the characters. It takes a long time to grow a relationship with characters and create a community of viewers.