Taxing businesses on total revenue would prohibit entire classes of businesses, for example stock brokerages, bond market makers, ebay, and amazon's 3rd party m

Taxing businesses on total revenue would prohibit entire classes of businesses, for example stock brokerages, bond market makers, ebay, and amazon's 3rd party marketplace. And did you know that grocery stores are low margin? Hell, if you average them over the economic cycle, airlines and car production are low margin.