Just think about Media markt customer service for example…
Amazon changed that by introducing US-style no-questions-asked 30 day returns etc… but nowadays they are slowly chipping away at that, 14 days is the the norm now, (which is the hard limit anyway, since being set into law a couple years ago)
But yes the customer friendliness is slowly being cut down, due to growing costs. Zalando (an online fashion retailer) has also reduced their return policy recently.
It's illegal under German law, EU law, and I'm sure it's also explicitly called out as illegal in at least 5 trade treaties Germany signed.
Needless to say, like everything in the EU, it's only enforced against local companies, in this case German ones.
Say ... what was Amazon's initial reason for success? Being cheaper by exploiting the interstate commerce clause to avoid paying sales tax when it's competitors weren't allowed to do so? You don't say. Amazon is famous for losing money on their delivery business (up until recently)? It's constantly repeated in 10+ years of their financial statements ...
So either Amazon has completely changed tactics and become truly brilliant and we still don't understand the plan ... or they're up to their old tricks, being slightly cheaper, now with less legality!
In the US these laws have been dismantled since the 70s (if I get the text correctly, I'm not expert on US labor law). And in Germany there is a chancellor who is pushing to increase the 40 work week (which still meant up to 50 hours) to a 48 hour work week - that's the change necessary to have Amazon (and others) treat their drivers and warehouse workers with more dignity. /s