The thing about trying to translate the lore into the gaming realm is that you lose a lot of the elements present in the lore. It won't be a game anymore without the illusion of choice and it certainly won't be fun for mass adoption when the things you do in the game never mattered. I don't think players that play games related to the mythos are geeky enough to understand the complexity of the lore itself.

As long as devs can commercialize something with the use of the mythos for marketing, there's not much we can do about that.