It's just very rare to use a Windows VM in a cloud service environment to deploy services.
This may change with the Docker support we are seeing promised. Powershell is definitely a workable remote shell. But it's not the case that this is sufficient today.
That's cool but only run on Windows 10 which limit its usage and hence the community. A widely used non-V8 Node.js would be a great project in my opinion.
Give it time. When Node was new it didn't work on Windows, which limited its usage and hence the community.
Now, Node is probably the most reliable cross platform language host. Write something for node, nearly anything, and if it works on your OS it'll probably work elsewhere too.
There's no reason something similar couldn't happen with Chakra, especially now that it's open source