What is the fine-grained topic of the following text: Even after a half century of work in the radio and podcasting business, PodcastOne CEO Norm Pattiz is still looking for his next crowning achievement: the second podcast boom, which Pattiz estimates will take place in the next few years and make podcasting a multibillion-dollar industry. Only return the topic.
The anticipated second podcast boom and its impact on the industry according to PodcastOne CEO Norm Pattiz.