What accounts for the ongoing success of Kubernetes and the vibrancy of its ecosystem? I think it's the way that Kubernetes grew organically out of earlier successful abstractions, each of which allowed development teams to spend less time on technology and more time on capability

Abstraction has been one of the main ways computing has advanced. As we moved from toggle switches to punch cards to assembly to higher-level languages, we gained the ability to declare desired behavior in a way that's closer to the way we specify the problem.