Earlier quoted context omitted.
I suppose you can make some variant of this argument about the modern economy, but I don't see why you're singling out Musk for this. Is it because transport infrastructure tends to be subsidized? If so, could we not make the same argument for roads, trains & such?
Roads aren't a speculative technology, they are proven to work, and are not owned by a private enterprise. Elon Musk is being subsidized to create a monopoly of transportation on commonly owned land. But yes, this isn't just a problem with Elon Musk, the political-industrial complex is a newer but persistent problem thats become exacerbated with age. Elon Musk is just a master at exploiting this hole.
One is investment into speculative vs proven ideas. I don't have a single/principled answer to that. Another is subsidization, though that is fairly common (almost universal) in transport . A third is monopoly. Again, almost unavoidable in transport.
I guess if you put the last two together, publicly subsidized private monopoly than you get to some "political-industrial complex" issues. If you object to these arrangement entirely in principle, than that's effectively an objection to privately built/run transport infrastructure in general. Public only. That's not that unusual a position.
I think that's fine, but I still don't see the hostility towards the idea of hyperloop or Elon Musk. Hyperloop is a concept/design. You could build it without Musk. You could build it without private money.