Been hearing that for as long as I can remember, but that still does not make it fact.
Do you have any specific instances to back up the conspiracy theory? I am honestly curious about this.
Do a Youtube search on Tom Valone. He worked in the US patent office and has seen the patens get bought up or sequestered by the US government on grounds of national security.
This “Big Oil” has bought the patents conspiracy makes absolutely no sense.
The patents are public information.
Just build it. NOBODY needs permission to build it.
They would however, need permission to sell it.
If any of these devices worked, there would be hundreds or thousands of them actually working and there would be as many people showing off how they built them and how they work. All for free.