Having had to coordinate service extensions by Comcast for a business in the near west Chicago suburbs about a decade ago, $11k isn’t bad (because skilled tradespeople at a subcontractor are going to be on a pole or running cable underground) but a neighborhood can do better if they’re willing to buy the fiber and do the labor themselves. Having done some directional boring for utility runs on a property in Maine, it’s straightforward.
Obligatory Jared Mauch reference: https://news.ycombinator.com/item?id=24424910
Something similar in rural northern Britain: https://b4rn.org.uk/