Amazon, and other multinational companies, should be required to publish a lot a more information about its income and accounts in each country.

"It's not illegal" is a valid excuse in court, but not in our judgment. Laws that encourage tax-dodging by the rich are the result of a tacit conspiracy that communicates through lobbying. The politicians that keep these laws in place are responsible, and so are the companies that lobby for them and profit from them. Morally, they are all culpable.