It's insane that it's legal for a major marketplace platform to prohibit vendors from using their platform to engage in manipulative price discrimination?

Online stores should be forced to allow manufacturers to use their sites as free advertising platforms to expose consumers to their products, while incentivizing them to actually complete the transaction someplace else?

Should brick-and-mortar stores not be allowed to offer price matching either?

You would have a point if not for Amazon's exorbitant fees which it expects to be absorbed by the seller and then requires that seller to set the same prices everywhere.

This is clearly manipulative and is regulated outside the US.