Becoming a billionaire is actually more achievable than I would have predicted, by a lot.
It'd be interesting to see just how steeply those advantages decrease the odds for the rest of us. I'd be willing to bet that—even in a comparatively wealthy developed country—the true chances for an average person achieving >$1B are orders of magnitude lower than the figure quoted.
Developing vs developing world is an interesting question. There are a lot of people in the developing world who outright stole $1B or more, and the process of development frequently makes billionaires. Chinese people I know who came to the US and had average results often regret coming because they know people back home who got really lucky and hit it big.
Bernard Arnault is another interesting case study, his talents were quite different, started with a wealthy family, had luck to multiply his family wealth with real estate and get out [2] had a lot of luck rolling luxury brands together, and also benefited from the growth of China, as "keeping up with the Chens" more than made up for the decline of materialism in the west.
[1] https://en.wikipedia.org/wiki/Bernard_Arnault
[2] it is easy to turn a small fortune into a huge one in real estate using leverage and then lose it all
[citation needed]
Gates had family and connections. Brain didn't come into play.
https://en.wikipedia.org/wiki/List_of_countries_by_number_of...
I think the OP wants to be rich when he's young.
[1] https://www.amazon.com/Millionaire-Next-Door-Surprising-Amer...
That doesn’t take starting your own business or even working for one of the top paying companies. If you bought a house ten years ago in an area with rapid price appreciation - congratulations you are now close to a million easily.
Now if you work for any of the tech companies that pay top of market for a few years and live below your means, reaching 1 million is even easier.