The law mandates egress to be free or at provider cost when two data processing services are used in parallel; AWS, OTOH, provides it free (better than is minimally required!) and to customers not protected by the law at issue (also more than required!) but only when migrating off of AWS, not when using AWS alongside another service, so (assuming it continues to charge much more than their cost for all other egress) is not actually complying with the law outside of a very narrow subset of the cases where it applies.

This is a particularly meaningless gesture in the direction of compliance from a provider dominant across so many categories of cloud services as AWS is -- the whole point of the "in parallel" requirement in the law is, I would assume, to prevent the mega-cloud providers (AWS, mainly, but also Azure and GCP) from being able to effectively lock customers to monopolize areas of cloud services where their specific offerings are weak by the egress fees of their dominant offerings which would be used alongside them. "Free only when you are transferring out to leave our platform" doesn't address this lock-in at all.