all for profit companies are greedy by their nature, but US companies are on a different level because you can 'buy' the government by lobbying or supporting their election campaigns or break the law and eventually make sure law is changed to fit your business (e.g. first taxi medallions adjusted the law for themselves, and then Uber)

Same is very difficult to do in China (look what happened to Jack Ma) or in Europe, because you have to follow some regulations