[friedman23]

>What effect would a tax purely on size (income rather than profit) have on the world economy, if everyone were to adopt such policies? It would discourage large companies and encourage small ones.

How so? Your argument makes 0 sense because the tax is proportional regardless of size. What it will encourage is high margin business and it will discourage low margin business. Larger businesses are able to increase their margins because of increased efficiencies.

[mabbo]

No, taxes are based on profits. I work for Amazon, which notoriously has nearly zero profit most years. The company pours money into investments instead. That's how it's gotten so big.

What I'm saying is that if there were a small additional tax on giants based purely on their company value or gross sales, it would 'level the playing field' for incumbents who don't have the efficiencies of scale that the big companies have, which I think is beneficial to society.