And neither did any other invention until they reached a certain scale, price point or level of sophistication. The counter to your comment would be, fusion is

And neither did any other invention until they reached a certain scale, price point or level of sophistication. The counter to your comment would be, fusion is still very much in the R&D phase. As being in the R&D phase like so many other products were at one time, of course it has not met your expectation. But neither did Airplanes after the first flight.