because it used to be that the ends and the middlemen were different entities. In the universe where they are the same entity (walled-gardens) there is only th

because it used to be that the ends and the middlemen were different entities. In the universe where they are the same entity (walled-gardens) there is only the middleman. In such cases you either trust them or you don’t, anything more is not required because they can compromise their own endpoints in a way you can not detect.