I don't think its a matter of standards or of the differences in game content we are looking for.
Those are setting books, but with those setting books there are rules expansions and genre expansions easily harvested for your game. Alongside those settings are adventure locations that you can drop into your world, NPCs you can use, and so on. And each of those publishers also has non-setting content designed for people who really don't want to be bothered with the rest of the setting stuff.
Let's not try to hide behind possibilities like "I think you like bad material" or "Your material could never be relevant to me."