The TL;DR is that the “hidden tax” is onerous advertising fees paid by third-party retailers to have their products appear high in search results. I don’t really see the issue here, since this appears to be a win-win for both consumers and sellers. Consumers get the cheap stuff they want with free shipping, and sellers get access to hundreds of millions of customers and the volume of sales needed to survive in a low-…
Consider the scenario:
Amazon executive want more bonus, so they decide to increase retailer prices by 10x.
Now, retailers cost have increased for Amazon by 10x. But other distribution channels remain the same.
So, retailers should increase prices on Amazon only. But Amazon forces them to increase prices everywhere.
This interference of Amazon on other business is the issue
Amazon sees that it's profit is lower