Regarding Viagra, that is correct. I recently floated by the doctors house on Star Island South Beach, Miami. His neighbors are famous actors and musicians and he has one of if not the largest house there.
Serendipity.
“he has one of if not the largest house there.”
But of course he does...
Building a fully reusable rocket is a much more significant event than inventing viagra. Musks other companies make sense if you consider what a Moon or Mars settlement needs.
Elon Musk, the StarProphet! Hell probably be part of the pantheon of the future Solar System-wide religion...