We almost certainly have 1,000 Einsteins and 1,000 Mozarts alive today. A relevant quote from 1979:

“I am, somehow, less interested in the weight and convolutions of Einstein’s brain than in the near certainty that people of equal talent have lived and died in cotton fields and sweatshops.”

-Stephen Jay Gould

Sometimes I think it was a mistake to let the programs we primarily use to view text and images become bloated virtual machines that execute megabytes of arbitrary code with every page load.