> Now it's mostly down to "do you support Amazon?" I don't know if this is still the case, but the Kindle used to be a loss leader. So in theory, by purchasin

> Now it's mostly down to "do you support Amazon?" I don't know if this is still the case, but the Kindle used to be a loss leader. So in theory, by purchasing one, using Calibre only and never purchasing ebooks from Amazon, you are causing Amazon to bleed revenue.