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@excon -- And I led off with the word "everyone", because it's more important.
ANYONE can win the Lotto and live a life of luxury. No intellect is required.
But NOT EVERYONE can win the Lotto and live a live of luxury. It doesn't work that way.
And, yes, maybe there is room for one more good restaurant in your town. Maybe even two. But NOT ten, and certainly NOT a hundred. At some point, demand cannot support everyone's desire to be a restauranteur. That's why something like 90% of restaurants fail and go out of business within a few years.
OK, so you know a few not-very-bright people who became bosses. That tells us NOTHING about the likelihood of any one person becoming a boss, just as knowing a few Lotto winners doesn't tell you what the chances are of someone winning the Lotto.
Moreover, people like you who took chances and succeeded end up telling their stories to everyone who will listen. Those who took chances, failed, and ended up being night assistant manager at their local Taco Bell don't tell their stories. Survivorship Bias is NOT data.