It's not, but perhaps it makes an even deeper point: that it is genuinely impossible to use the Internet without Amazon, Google and Microsoft, because so much of the web relies on the three giants, and every click you make adds a fraction of a cent to their hosting revenues.

That said, I do agree that madness lies going too down the supply chain. Is using any device with a lithium-ion battery inherently immoral because they contain some cobalt that may have been mined in exploitative conditions in the Congo? Where do you draw the line?