I am building a compute layer for Observablehq which enables services to brought up using nothing other than a web browser. It's a bit too soon to call it a K8s replacement but the motivation was the complexity and laggyness of bringing up services on cloud or k8s.
The WEB + on demand infrastructure is the distributed replacement of K8S
WEBCode is about eliminating environments and the difference between backend and front end to radically reduce the number of tools necessary and to enable new development workflows like live debugging production trafic with the vanilla Chrome debugger.