By those criteria this group does seem to be among the very few. I'm sure there are thousands of others whose defining unfair advantage also stems from creatin

By those criteria this group does seem to be among the very few. I'm sure there are thousands of others whose defining unfair advantage also stems from creating a unique money-making machine of some kind, in particular making a tangible product, even if that does still add up to very few billionaires today. Seems to me the more efficient the money-making machine, the easier it would be to do well without having to grow to billionaire scale anyway.