Imminent collapse and bankruptcy when they leave due to Amazon's dominant market position. That you can set up a shop anywhere does not mean anything when all of your potential customers are only going to the Amazon digital strip mall.
37% is not a monopoly. If you have a differentiate product, you can set up your own website through Shopify or any number of places.
And if you haven’t been paying attention, the FTC has been laughed out of court for the last five years every time it has gone after BigTech
The government has a “monopoly on the legal use of force”.
Look no further than Florida to see what an overzealous government can do when you disagree with them or the police that raided a newspaper office because they reported on police corruption.
I’m much more worried about when the police are behind me because “I don’t look like I belong” in my own neighborhood than the Google car mapping my street.
The government at least has the obligation to appear as if it's beholden to your will and rights. Corporations have no such qualms.
Also please tell me a scenario where Amazon takes over all retail?
If you haven’t been paying attention, the justice system and political parties gerrymandering hasn’t even been trying to act like they are behaving fairly.
The governor of Florida has actively been punishing companies both big and small that have been speaking out against him.
People act as if you have to sell on Amazon. You don't. That assumption and expectation is why Amazon is dominant to begin with. Sellers should leave if they don't like it, and that will naturally soften Amazon dominance.