I still don't see what's novel about this. Linux was running Windows binaries directly through API translation long before, using WINE. And virtualization of

I still don't see what's novel about this. Linux was running Windows binaries directly through API translation long before, using WINE. And virtualization of entire OSes with VMware, VirtualBox, etc. was around long before WSL too. The only thing novel here was that MS was actually directly supporting running Linux, instead of poo-pooing it and making things intentionally difficult.