Not a rebuttal, because solipsism is unfalsifiable anyway, but in About Certainty, Wittgenstein shows that in order to survive solipcists have to act hypocritically. Although they will profess they have their own reality or they even just dreamed you and every other people around them, they won't act like it is true. They will continue looking for food, friends, entertainment, go to sleep. Their day to day interactions with other people require them to act like they share our common reality, like those people they pretend to have imagined actually did something when they are not there to watch.
A solipsist who really believes can't be a functional member of society, and in the other hand every functioning member of society who pretends to be solipsist is only pretending.