Indeed! But all sorts of things can happen to stop it from becoming truly radically huge. Certainly it'll sell well at first — so did the Kindle. I wouldn't call the Kindle radical, though, even if it is pretty big (and a damn good product at that). By "radical" I mean "so big every family has two". I can imagine that happening, but I wouldn't take it as a given.
Ah, I see. I didn't realize you were speaking proper English rather than Internet English, and thus "radical" actually meant something far removed from the ordinary. I've been spending too much time on twitter where "awesome" often means "not bad".