It's only 64-bit versions of (x86) Windows that don't come with EDLIN installed.
Also, in Vista, 7, 8, 8.1, & 10, you need to install NTVDM separately in order to run EDLIN. Typing the command for the first time brings up a Windows Troubleshooter Wizard to do just that for you.
And on SourceForge, which is newer?? FreeDOS edlin: https://sourceforge.net/projects/freedos-edlin/