There appears to be something like a town growing along these bike trails. At parking lots there are appearing food trucks offering hot food. In town, I have seen people with little trailer cart behind their bikes with a little bit of merchandise or a coffee stand. I would not be surprised if they start to appear at the edge of the trails. I can certainly see a potential for a kind of a roadside stop for the passing bicyclists, but served by a business that uses bikes instead of cars to stay in business.
This episode is also available as a blog post: http://hypothesis-discovery.com/2021/05/16/urban-transportation/