Earlier quoted context omitted.
If Amazon the marketplace was solely responsible for the upkeep of the marketplace, they'd be more inclined to actually maintain it in a working manner. Not to mention it'd be easier for publishers to sue them to compel compliance.
> If Amazon the marketplace was solely responsible for the upkeep of the marketplace Who else is responsible for the upkeep of the marketplace? The "break them up" argument works if there is an inherent conflict of interest that would get resolved if they were separate entities, but that isn't true in this case.
The inherent conflicts of interest are everywhere. It commingles inventory, competes with its partners and encourages an auction like atmosphere for constrained product. Retail Amazon and marketplace Amazon need to be segmented for consumers to understand who and how they are buying products.