"Dominant market position" would be something like more than 90% of retail sales. Clearly, their market share is nowhere near that. I don't really get why ever

"Dominant market position" would be something like more than 90% of retail sales. Clearly, their market share is nowhere near that. I don't really get why everyone is bashing Amazon here. They sell a lot of stuff, and they sell it well. By the very act of selling they get data on what is being sold - what kind of retail business could last more than 12 hours without knowing data about its own sales operations? But apparently in the EU that's now illegal. Or more realistically, it's illegal if you're rich enough to pay huge fines directly into the pockets of the EU Commission, which is desperate for money and can directly levy fines without needing to win a court case in front of a neutral judiciary.