1. Successful experiments are on a very small scale and cannot be consistently replicated.
2. There is no widely accepted theory of the actual mechanism of Cold Fusion.
And I could add a third: the Cold Fusion community cannot attract significant levels of venture capital.
I think if I had a true world saver I would give it to the world knowing my name would stand along side names like DaVinci, Marconi, Tesla, etc.
The world would beat a path to your door looking to hire you based on what you invented.
Aspirin achieved widespread use and acceptance before it was ascertained how it worked. Had Fleishman and Pons steered away from the use of “cold fusion” I think their contribution may not have been hampered by the forces of vested interests in high temperature fusion. Their process could have studied in a less charged atmosphere.