For one thing, it's built into windows from the apt-get-go; And honestly has a pretty extensive library; So you can just copy your setupPC.ps1 file and run it to install all your software, and also update any that's already installed.

Honestly Microsoft's biggest miss is not having a GUI for it. (The Windows Store does act as a software source for it, but the primary software source is separate and much larger without the Windows Store overhang.)

If they implemented 1. An Apt like interface (it's kinda not amazing as is) and 2. a GUI, it could see mass adoption overnight. As long as they don't fuck it up or be overbearing on who gets to be included. And no paid software should be listed by default; at least not without a trial and a warning that it's paid software.