RPGMemes

Yeah, but have you tried to convince people of anything? They don't care. They just want to do the thing with their friends. Any sort of "here's a better game" is going to smash into "did i make a bad choice? i spent all this time and money on D&D and they're saying it's bad? now i feel bad. this other person is making me feel bad. they're wrong and stupid"

Some people might on their own decide to try other games. A lot of them are just going to enjoy hanging out with their friends. (Have you talked to casual D&D players? The kind that don't post on obscure websites. Their house rules are bizarre)

I would love for D&D to be a niche game that focused on retro dungeon crawling instead of the most popular RPG. I don't think it's going to happen.