The "market failure" part is that the technology has been available to the world for a while and no one in your precious "private sector" took up the challenge of attempting to make it.
Because the people in your precious "public sector" discouraged them, and in one instance (see above) flatly told them no, you cannot do it. And now, all the private sector money is tied up in delivering fuel to the technology that the "public sector" pushed so hard to get going. So, it's as I said all along: Not market failure, market
distortion, by government action.