Earlier quoted context omitted.
It strikes me as very similar to the ever present conflict of interest in the securities world between clients and broker-dealers. A business like Amazon’s retail one is quite like the latter, and I would be totally unsurprised to see more and more legislative pressure applied to force them to segregate if not choose between their ‘agency’ and ‘prop’-type franchises; especially outside the US. Stuff like the EU’s DMA…
We let supermarkets competitively position themselves all the time. Why is Amazon different?
Most supermarkets do not rent out a significant proportion of their floorspace to third party retails which they directly compete with? (and therefore have an arguably unfair advantage because they have full access to their sales data but not the other way around)