The very example you cite at the end is an example of them genuinely innovating and advancing the field. Have you read the Fuchsia docs (https://fuchsia.googlesource.com/docs/+/HEAD/README.md)? It's spearheading several innovative OS concepts and I'm excited to see it develop (to name three: microkernel architecture, top to bottom least-privilege access sandboxing, and Flutter for the UI which advances UI development in other ways).