The OP suggested lawmakers should somehow make it illegal for Amazon to offer preferential treatment -- prominently featuring their items -- to suppliers that don't charge less to other retailers. Every store does the exact same thing -- and this is GOOD for consumers. When your supermarket puts Coca-Cola on sale (because Coke paid the supermarket), it brings out extra bottles and places them at the front of the store and makes it easy to buy. Sure you can still buy Pepsi, it's back somewhere on aisle 12 where it always is.
Haha you can't even pretend to have misunderstood the situation to this extent. QED on the bad faith. Amazon DGAF what percentages other retailers get. How would they even know those? They are penalizing suppliers for the prices that consumers pay at other retailers. So long as Amazon are allowed to do this, they'll just keep slowly increasing their cut. What's 34% today will be 40% next year, etc.
Although I made the initial mistake, I'm pretty sure you just piled on with more bullshit. I'm rather confident Amazon has a good read on what its suppliers charge other vendors, just Wal-Mart and Target do in the B&M space, and that they do very much care.