Not really. He's not saying that there would only be a few of them deployed, he's saying that once you've deployed a few, those few will be used to make more, and you won't be able to sell yours for more than the cost of materials, since anyone who has already bought one from you can undercut you.

I think this will not be a real problem for a really long time, but it's actually an audacious vision rather than a too limited one.