Yeah they may pump out a few more Model X's, S's, 3's with some minor mods, keep milking the cow (if it even is a cow, maybe a potential cow, and also if they can even get to a point where they can scale) and eventually... who knows? The scale problem hasn't even been solved yet. You're not going to find another leader with that much raw energy, intellect, drive, and passion who's going to have a chance at bringing us to that reality even close to as quick as Musk can.
My only concern with the whole show is, can anyone (particularly seasoned auto veterans) stand to work with him long enough for the scale and production problems be addressed. As well as iron out all the wrinkles with the designs (some notoriously faulty parts which take quite a long time to fix sometimes..)