I think several companies are trying to sell exactly that. if you look up VMWare's "TAP" offering it's attempting to provide a wide umbrella of components that move in that direction. Others in the space include Redhat, Replicated, Rancher.

A few individual components that try to bring back the ease of rapid/easy deploys include: Flux, Tilt, Argo, kapp-controller.

They all have slightly different priorities and make different compromises, but anyways just to assure you there's quite a few people trying to build and sell the layer you're describing.