Earlier quoted context omitted.
We have customers who go to other places for our niche services (art/craft), I don't have a problem with that. We could seek to get those customers exclusively to use our services, I just don't find a compelling reason to do so (of course I'm greedy for money, but other than that?).
I mean no disrespect, but I think you are perhaps misunderstanding the concept of a monopoly.
Some independent stores simply aren't interested in being the monopoly in their local area for their particular product. Sometimes they just run the business because its a product they enjoy and running their own business is preferable to being an employee for someone else.
Another example of businesses not run like monopolies is with consumables like fast food. You might have a successful fish and chip shop, Chinese or Indian take-away. Most UK towns will have multiple different independent restaurants but you seldom see these restaurants open up more shops in town, or even in other towns. Yet there is clearly a demand for good take-aways.