well it doesnt appel to me.. so your logic fails instantly. i personaly dont care for big screen. im more then happy with 4inch.I can understand people being skeptical, but ultimately the proposition of foldable screens is very simple: more screen in the same package. That is something that appeals to everyone and has clear benefits.
So in the long term I think foldable screens will be a success, it's just more a question of what implementation will work best.
and my prediction is, foldeble screen will fail.