The thing I find interesting is I've never seen a show like Critical Role be successful. It is in essence a bunch of people playing D&D. They make it very entertaining. Matt Mercer is a pretty amazing DM. He and his voice actor friends show how fun it can be to sit down as a group of friends and play D&D. I like that Critical Role is showing that any group of people (not just nerds and geeks) can sit down, make up a character, and play as a group. D&D is mainly a group game of make believe using a numerical resolution system using dice, much like other games. A way for people to participate in a story like they would read in a book or see in a movie. To make a character they create the star of their fantasy life rather than live vicariously through actors or writers. The attraction to TTRPGs was never a hard to understand phenomenon. It was always the same type of motivation that drives movie or book sales. The desire to escape into some other world and be someone else for a time, someone that is part of a story in a fantasy land that doesn't exist save in the imagination.