Twitter Blue is what happens when you start treating a tool as a status symbol, so you throw the tools away and start selling gold-plated hammers made out of thin plastic.
Not that verification was perfect before, but most of the complaints I heard prior to the enmuskification were "wait, *that* person got verified but *this* person didn't?"...essentially treating it as a status symbol, indicating who's worthy of being verified, rather than one tool in the toolbox to indicate that the account really does belong to who it says it does.