It's a logical move, since the publishers are basically now just glorified advertising material distributors anyway.
They are really no different from your local junk mail deliverer, walking up the street shoving junk mail in everyone's letterbox, except JW's waste time by knocking on your door first.
Actually, just shoving a tract or brochure in everyone's letterbox would be much more effective, since 99% of householders turn them away from the door and so miss out on the crucial tract or leaflet.
Therefore JW's are bloodguilty by denying 99% of the population from getting a life-saving 'witness' by insisting that the person receive the literature directly from the hand of a JW standing on their doorstep rather than from their letterbox, LOL!
Yes, the archaic insistence on a literal 'door to door' work is stopping many from receiving a witness and isresponsible for many more dying at Armageddon!!