I mean, the fact that this mentality even exists is exactly why D&D, at least in the short term, is bad for the rest of the industry. You don't really see this issue with board games, and neither in video games aside from the most dedicated Skyrim modders.
D&D tends to be peoples' first TTRPG due to its already existing brand size; it's the first TTRPG most people would come across by word of mouth or by Internet searching. But it doesn't stop there. The game has an extremely strong brand identity, it has its own media ecosystem, and it has a dedicated fandom that in its current state is largely divorced from the rest of the TTRPG hobby. D&D isn't so much a gateway game as it is a trap; new players who come into TTRPGs through D&D are at risk of getting stuck there and never expanding their horizons, because both D&D's passive market dominance and active marketing efforts cultivate the false idea that "D&D is all you need", ranging from simple apathy towards other games, to active - and sometimes even belligerent brand loyalty. The dragon game swallows up and hoards all the players and resources; and the rest of the market, even the Tier 2 studios, are left to fight over scraps.
