Yeah, true, but I do wonder where it originated, even before the movies. Im sure there were stories about Medieval times where vampires couldn't enter a home, or Holly place without permission lest they be killed/die. Im not sure about the vampire's thing, but I know some demonology legends do say evil spirits can never enter a house/building blessed by a priest or proteted by some charm or spell or something. Vampires seem to maybe follow similar myths, but I don't know the beginnings of the myths, but yes, you are rite it was before Hollywood.
Unless Bram Stokers was the first to invent the "permission" myth???
although I also heard demons/evil ones can go wherever they please. Seems vampire lor follows different path at times to that of demons and spirits.