If you price lower than your competitors it is anti-competitive dumping.

If you price higher than your competitors, it is monopolistic gouging.

If you price the same as your competitors, it is price-fixing.

No matter what price someone selects, they are guilty of something.

AWS bandwidth fees make a multi-cloud infra a less likely design or migration choice by their customers, leading to lock-in.

> Service providers may attempt to “lock in” customers to prevent them from switching to alternative products, technologies, or suppliers. Customer lock-in involves raising customers’ switching costs to the point that the cost of switching outweighs the potential benefits from switching.

http://www.ictregulationtoolkit.org/toolkit/2.2.3.6

Egress is expensive, therefore you're less likely to use other cheaper cloud vendors to host some part of your infra and keep everything inside aws network (as internal aws bandwidth is free even halfway across the world). Also if you have huge amount of data, moving them out of aws into another cloud would net you a hefty bandwidth bills so you're less likely to consider moving.