Where I am we had one for about 6 months. There are a couple of shops, yes, but they are a drive. Dunkin has a store every mile.

There is but they're considered more of a sit down place. Big chains are successful because they have drivethru at convenient (expensive) locations.

Most do - even small towns do.

Starbucks is convenient and that's what they do.

Small stores don't usually have an app, have too few workers so it takes 5-15min to make the coffee or worse after whatever line.

If they ever figure out they can buy a whole ass bag of coffee and a dripper for the cost of 3-5 Starbucks and drink for a month... They'd still go to Starbucks.