This is a ridiculous argument, Amazon clearly has substantial market power which can be used to reduce the exposure of their suppliers [1] (the loss in exposure means there a significant costs associated with suppliers moving to another platform/store - the very definition of market power).
Comparing them to the mom and pop coffee shop is absurd - unlike the coffee shop, there are not hundreds of Amazon competitors that you can sell your product through. You are literally comparing textbook definitions of perfectly competitive markets (e.g. coffee shops - hundreds of competitors and low barriers to entry) to oligopoly markets (e.g. Amazon - very few competitors and high barriers to entry), and somehow reaching the conclusion that they are the same? This is obviously nonsense and goes against the most basic of economic principles.
Comparing them to the mom and pop coffee shop is absurd - unlike the coffee shop, there are not hundreds of Amazon competitors that you can sell your product through. You are literally comparing textbook definitions of perfectly competitive markets (e.g. coffee shops - hundreds of competitors and low barriers to entry) to oligopoly markets (e.g. Amazon - very few competitors and high barriers to entry), and somehow reaching the conclusion that they are the same? This is obviously nonsense and goes against the most basic of economic principles.
[1] https://www.cnbc.com/2019/03/19/heres-why-retailers-should-b...