And yet Walmart is still much larger than Amazon. In 2015, Walmart had sales of about $508 billion, while Amazon only had $83 billion. AMZ barely cracked the top ten:
The difference, of course, is that Bezos controls a much larger portion of AMZ than the Waltons control of WMT.
None of them are anywhere near John D. Rockefeller, who had an inflation-adjusted net worth of $392 billion, equivalent to 1.5-2% of the entire U.S. economy at the time.