AWS used to have an integrated Ingress Controller - It just sucked (At least partially because it was built by Google, not AWS). That AWS didn't take over hosting of it (it's not even available as an add-on!) when Kubernetes the Project removed the first-party support of it is... Well, it's a statement by AWS. They were dragged kicking and screaming into Kubernetes at all, because they see it as hurting their moat, and have stalled the Ingress project quite a bit.
