Well, as a virus it doesn't have "cells" in the standard biology sense. The nanostructures might be vulnerable to decay, but since (I think) the relevant bits a

Well, as a virus it doesn't have "cells" in the standard biology sense. The nanostructures might be vulnerable to decay, but since (I think) the relevant bits are the outer coat, I'd think they're pretty sturdy. I suspect the longevity is one of the easier barriers to commercialization.