You state that these qualities are exclusive to social networks in the same sentence where you say that other means could be used but are much harder. So… not exclusive?
"Travel to Australia is possible exclusively by plane or boat" is a sentence very few people would have a problem with, although you could also technically and with great effort get there by swimming, blimp or hanging from a million helium baloons and hoping the wind blows the right way.
In all discussions I've heard that mention "exclusive value" or a similar concept, the agreed-upon definition was always something like "where all others are orders of magnitude worse".