I was wondering if anyone has tried to figure out what % of all the events are related to D&D or TTRPGs? I am sure it is a lot lower than when the cons first started. Would you think board games are a bigger draw now? If you were some how able to download the event catalog it would be easy to figure out. I tried doing searches on the event catalog and it shows 18,869 events, for dungeons and dragons it shows 1,289 which is 6.8% pathfinder shows 375 or 2% I may not be exactly right, but that's my guess.
When Gen Con started, 0% of the events were D&D or TTRPGs because they hadn't been invented yet.
You can download the event catalog here.
Comparatively, there are 7205 board game events and that is the single largest category.