edit: ok this is done by UOKiK, a consumer protection agency. This agency has supposedly been doing a stellar job keeping an eye on everything from banking to e-commerce sector.
Compared to Allegro, it has close to no offers, and search engine. Just. Doesn't. Work.
My friends who moved back from the Bay Area still prefer to use Amazon, but they use Amazon.de instead - similar shipping times, and much better selection and reliability.
amazon.de on the other hand has English version and stuff is sent from warehouses in Poland anyway.
I find the eBay-esque artifact interface absurd. It's likely Amazon hasn't found a way because an environment that isn't a monopoly isn't attractive to begin with for that business model.
But think about it - when was the last time you actually got a good comparison in this market between allegro and a dedicated e-commerce site? For many product categories the latter almost doesn't even exist anymore.
If Amazon is being treated just like all the other companies, and protection agencies are doing their job, then they wouldn't be able to use their neo-colonial business model.
See: what Amazon itself has done in the Middle East among Uber, Delivery Hero, and all the other Big Companies With More Capital have done to dominate these markets. It can't work if the governmental watchdogs like market and/or consumer authorities are able to block them.
I'm not sure enough to know if that's sarcastic, but the circumstances make me wonder if this was to promote local competitors or score political points.