He [Gates] was given a presentation at ENEA several years ago. He supposedly funded Duncan's research. Why has he not done more? Spent more money?
I have no idea. You would have to ask him. As I said, that is like asking why Ken Olsen did nothing to stop IBM and Comaq from putting DEC out of business. DEC was the second largest computer company in the world. Obviously Olsen was a gifted leader and a world-class expert in computers. Yet he did not respond until it was too late.
People are inexplicable. Read history and you will see countless examples of behavior that seems self destructive or inexplicable, in which people were paralyzed and unable to do what the situation called for. When Gen. Grant took over the siege of Chattanooga, Rosecrans, the general he relieved, briefed him on the situation and gave him a list of actions that were needed. Grant wrote that these were good ideas and should be done. So he did them, promptly. He wondered why Rosecrans did not do them. People are sometimes paralyzed with indecision. Cold fusion is a great risk, after all. I am sure it is real, but I do not know how to make progress in it or which experiment to pursue. A person could easily lose millions backing the wrong experiment.
Gates and the others at Microsoft made some terrible decisions in the past, handing over much of their business to Apple and later Google. He is not always rational. No one is. This is speculation, but I would not rule out the possibility that Gates is partly infected by the kind of irrational denial of reality that afflicts you and many others here, where you deny 18th and 19th century physics to justify your refusal to face facts. If cold fusion ever succeeds, people will look back at what you wrote, and what the Scientific American wrote, and they will wonder how anyone could be so deluded. Just as we look back at what the Scientific American wrote to deny that the Wright brothers flew.