Https://deis.com the guys behind the krustlet blog redirect to azure kubernets page, so maybe they where bought out, and no community effort remained to continue development... Wild guess. Source: over 1 year ago

Over at Deis, we’ve been busy building open source tools for Kubernetes. We’re just about to finish up moving our easy-to-use application platform to Kubernetes and couldn’t be happier with the results. In the Kubernetes project we’ve found not only a growing and vibrant community but also a well-architected system, informed by years of experience running containers at scale. Source: almost 2 years ago

Create and sell reusable code snippets or templates on platforms like CodeCanyon, GitHub Marketplace, and Bitbucket Marketplace. Simplify coding for others. - Source: dev.to / 6 months ago

Also people are selling whitehat template apps in thousands (through https://codecanyon.net/, for example) and I'm yet to hear Google has removed any of their copies for duplicated content functionality. However I've heard how an app got removed (last autumn) along with its copies after the owner published it as an open-source on GitHub and people started to re-post in in PlayStore. So there is certainly a risk. Source: about 3 years ago