It doesn't apply to anyone who's not eligible for that edition, isn't aware of it's existence, is just using the version that came with their device, or needs some specific feature in the 'Pro' variants (or whatever it's called now).

I remember having to bump up an edition from Home to get Bitlocker support for full-disk-encryption and something else.

e: While I've now migrated off Windows for a few years now, I still occasionally have to help family members who're wondering why X or Y no longer works, because MS decided to reset preferences.