That was basically what the original idea behind #AppCenterForEveryone was; not a Snap app store necessarily, but what if we could ship the whole-ass app store on any distro??
The fact that everyone (except Ubuntu) adopted Flatpak meant elementary could pivot to using a Flatpak Authenticator instead of a whole app store for those distros... but that still hasn't shipped, I guess. At least you can add the AppCenter Flatpak remote!

