It seems to me more and more that RFDs are farmers who build a suitable building and sell mainly slabs of shotgun ammo and a few guns and rifles. In rural places mainly. Perhaps similar to days of old when that was done by your local hardware shop. The farmers can carry on farming and open a few hours on a few days or when their mobile rings they can arrange to meet folk at their gun room/building.
I guess that may be the way forward. Overheads will be less and it's one way farms can diversify, which is what farms need to do today we're told. They really don't need to carry stock that folk more and more buy online and so large stock levels of slow moving stuff doesn't tie up money.
But, as I and others have said before on here, use your local shop or say goodbye.