Not sure what part of the country you live in, but this kind of bread is available at even the smallest out-of-the-way grocery store anywhere in California, and on most of the west coast that I've been to. I know because my family is hooked on it...
If it's baked by a local, skilled person (an artiasan!) and delivered early in the morning, I'd call that artisan bread.
But I think a lot of supermarket bread is basically baked in a big facility mostly by machines. I don't know the details but I think they have to make the ingredients more homogeneous for this to work. And if it's not delivered the same day, they will need to put preservatives in it.
IMO the difference is like night and day. My dad is the kind of person who swears by everything Costco, but even he likes the fresh artisan bread.
I found this out because I brought some bread from back to the suburbs to my parents, and they thought it was awesome, and had never had it before ... ! I haven't lived in the suburbs for ~20 years so I forgot that the availability of food is different.