[anthk]

Why half of Kubernetes and AWS look like technogies to support... themselves instead of shipping a new product such as LXC/LXD?

Most of the current technologies can be virtualized, and with LVM snapshots are a breeze, even extending media it's perfectly done. There's no need to use half-backed namespaces when kernel-level deduplition for memory pages exist when you run similar parallel VM's.

I find virtualisation far easier than containers. Not as fast to deploy, sure; but far more manageable for rollbacks.