Possible problems:
Many trad guys are "do it yourself" types.
Then there's the cost savings (real or imagined) of non overhead shopping (the internet and or mail order).
Potential converts to traditional are often hesitant, trust big hunting stores more than small shops (after all, in their archery catalogs they do have some trad gear).
Starting out, no name, word of mouth is gonna take a while.
Tough gig.
I too have thought about it, since I wprked at a gun/bow shop for a while.
But I learned quickly that customers come in all shapes and sizes..........rude, mean, stupid, dishonest etc.
Not enough good ones to make me want them (open invite to the general populace) coming over to my house or calling me on the phone.
It's fun to make and fix stuff, the backroom workbench is a Heaven. The front counter is Hades.