Why would the cloud provider charge for usage that doesn't actually cost them money? Unless usage patterns drastically change industry-wide, the ingress really doesn't matter to them. The egress does.
It seems entirely reasonable to look more skeptically at cloud providers' exact charges vs cost for egress, particularly when high egress fees might contribute to lock-in, and when the public price sheet vs the preferred customer pricing might differ radically. But asking them to totally restructure the charges, inventing a charge for ingress when their actual total ingress cost is zero and, short of major industry-wide usage pattern changes, will remain zero? Why would you do that?
