Sure, but those don't support local deployment, at least not in any sort of easy way.

That very much depends on what you’re doing. ECS works great if your developers can start a couple of containers, but if they need a dense thicket of microservices and cloud infrastructure you’re probably going to need remote development environments once you outgrow what you can do with localstack but that’s not really something Kubernetes fixes and really means that you want to reconsider your architecture.