jeff goldblum
Hey, guitar music can be poppy. Just look at mid-late era Depeche Mode (who managed to be both poppy and good with and without guitars, btw).

But then again, my favorite band consists of a bunch of anguished Germans wailing to the sound of construction tools and banging on metal objects. I don't think it really matters if guitars come back; I think it's originality and creativity that need to come in style, regardless of the instrument (or non-instrument, as it were).