I would imagine this is very common. I also wonder if there are "billionaires" who aren't even actual billionaires, just CIA operatives with legends slowly built up around them through the years.
Like the removal of dependence on foreign oil thanks to solar power, and development of inexpensive large-payload space launch systems for national intelligence payloads?
No, like digging under Washington DC to build a fake transport tunnel, when you're really providing cover for putting new construction in place under the capitol that the US Govt doesn't want their enemies to know exists.
(I'm not saying that is occurring, just that that would be the more likely example)
What are you implying about SpaceX and BlueOrigin...? What's really in that Roadster? :)