mythago
Hero
Has it though?
I have...doubts, but we both know there is no answer to this, so enjoy the theme parks.
Beyond being snarky, I'm not sure what point you though you were making here.
Big TTRPG publishers are putting out what you call 'disney-fied' games because they think that's what will sell. I presume they are competent enough to look at their own sales and marketing data to see what they should be targeting. Regardless, if they are as stupid as you suggest, they will certainly notice eventually if their happy new supplement's sales are in the basement, or if an indie competitor's World of Joe Abercrombie, But, Like, Even Grimmer's campaign setting is flying off the shelves and spawning a horde of imitators.