Bezos was also incredibly successful in another domain before starting Amazon - he was the youngest senior VP at DE Shaw. So maybe it wasn't just luck.
Was it "just" luck? Of course not. But I'd argue luck is the primary difference between being in the top 1% vs being in the top 0.001%
There could be 1,000 people just as talented as Bezos, but if they aren't in the right place at the right time they just simply aren't going to accumulate over 100 billion dollars