In episode 10 of the podcast, Lloyd Gyan, Johannes Paavola and myself discuss the market dominance of D&D, and the upsides and downsides:
Podcast Episode 10: D&D Market Dominance

Tabletop RPG site and podcast with advice and new content.
In episode 10 of the podcast, Lloyd Gyan, Johannes Paavola and myself discuss the market dominance of D&D, and the upsides and downsides: