Comment by pjmlp

I consider UNIX/POSIX becoming niche, including GNU/Linux, for the so called cloud native workloads.

The large majority of managed languages being used in such scenarios, compiled to native or VM based, have rich ecosystems that abstract the underlying platform.

Moreso, if going deep into serverless, chiseled containers, unikernel style, or similar technologies.

Naturally there is still plenty of room for traditional UNIX style workloads.