I don't see the problem with this. They don't have to sell on Amazon to begin with. Amazon obviously wants their customers to have the best price available. Sellers can just go off Amazon if they don't like it. If sellers end up raising the price on other platforms as a result of this rule, then that says more about them than Amazon.
Demanding the lowest price does not harm consumers. Overstock, Wayfair, Walmart and others do the same thing. The result is the lowest price for a given product on all sites. This is unquestionably good for consumers.
If the price is higher then the fault is simply that of the seller for raising it. All e-commerce sites want the lowest price for their customers. Of course, people don't see nuance and just see BigCompany bad.
Demanding the lowest price does not harm consumers. Overstock, Wayfair, Walmart and others do the same thing. The result is the lowest price for a given product on all sites. This is unquestionably good for consumers.
If the price is higher then the fault is simply that of the seller for raising it. All e-commerce sites want the lowest price for their customers. Of course, people don't see nuance and just see BigCompany bad.