Bill Burr has been running this speech as a business since 2012. That year he and Al Madrigal started All Things Comedy, a podcast network built as an artist-owned co-op. Comedians on the network keep full ownership of their shows, and they own a piece of the company distributing them. The middleman Burr spent his career complaining about simply doesn't exist in the structure. It grew into the biggest comedy podcast network going, 50+ shows pulling around 5 million listeners a month, and by…