Except there's nothing to say that a CF process would necessarily yield ridiculous amounts of energy at affordable prices. In fact the first proof of concept, if it ever comes, is likely to be just a barely measurable hair's breadth above break even. And scaling the technology to generate megawatts might well prove to be prohibitively expensive. What if a MW plant required thousands of tons of nickel? There might not be enough nickel in the world to supply a significant fraction of the world's energy supply.
Then there's the flying car problem. There is no doubt that practical flying cars are physically possible. The reason we've never seen one is that it's a fool's investment in the short- to mid-term. Any flying car we can come up with over that time scale is going to be a lot worse than buying a dedicated plane and renting a car at your destination. If there were some immediate niche application for a near-term flying car where it beat a dedicated plane and car combo, we might *all* be driving flying cars in twenty years. But there's no such niche to pay back investors. Even if CF is physically possible, if it doesn't quickly reach a stage where it beats some conventional power source economically (e.g. replacing solar panels in remote applications), it might never become practical.