We've reached the point where the C ecosystem has so given up on having a package manager that isn't Linux distributions that Microsoft added WSL and Docker(-compatible) Linux images are the most widespread distribution format. I don't think we can still figure out a way to decouple the two again, and without that, we can't really create a Linux environment that isn't a package manager with an email client.

And to a degree, the line is blurry with Windows as well, what with how deep MSVC/win32 is integrated into the system. .NET took decades to dis-entangle itself from Windows and become a proper standalone platform, and Microsoft's attempts at getting people to use UWP instead of win32 is ongoing and not very successful so far.