At what point do we say 'it is part of your product/service' versus, 'you must provide unhindered access'? How deep do I have to grant access to 'everyone' wit

At what point do we say 'it is part of your product/service' versus, 'you must provide unhindered access'? How deep do I have to grant access to 'everyone' within my product? (and no, I do not attend the Church of the Fruit)