> Bill Gates was last person to attain 12-figure fortune in 1999 $100B nearly 20 years ago, just before the federal antitrust case decision against Microsoft. Makes me wonder how much concentration of wealth would occur if regulation was not in place.
and Paul Allen got a huge chunk too, whereas Bezos is the only one
His parents became billionaires via their holdings in Amazon.
20 investors put in $50k each to start Amazon. Any of them that held up to this point, became billionaires.
You're confusing concentrated wealth, versus total wealth created. Amazon has plausibly created wealth for more investors, precisely because it has had fewer very large owners; more of the company was distributed into more hands.