If you got 10% it would be 50 years
Warren Buffet is definitely impressive, but compounding capital is a huge benefit
(Ok ok I ignored taxes, inflation blah blah)
Edit: just because this is fun: at $365M a year, you get WB wealth in 50 years at 5% and 32 years at 10%
Edit2: if you take Berkshire Hathaway's historical annualized return (20.8%), compounded quarterly, starting with $52M and no additional capital after that, you get WB wealth in 36 years.