God I gotta say I wish you were a wargamer, you would bring such a more interesting angle to that scene. You think D&D is a monopoly it has nothing on the stranglehold games workshop has on wargaming.
Not everyone knows this I guess but I actually am a wargamer.
But I actually wholeheartedly disagree about Games Workshop having more of a stranglehold on tabletop wargames than WotC has on TTRPGs, evidenced by the fact that I, as a Warhammer 40,000 player who got into it through Warhammer 40,000, have heard of other wargames, and had heard of them very early into my Warhammering career. Games Workshop is a monopoly for sure but they aren't capable of completely blacking out the entire hobbyspace to the same degree that WotC does.
As for what I'd do in the tabletop wargame industry if my team was focused on it, I don't really know, I don't have the same variety of experience with different wargames the way I do with different TTRPGs; all I'm probably qualified to even think of making right now is slightly more fun but less "balanced" Warhammer 40,000, or some kind of historical medieval battle game.

















