An aspirational goal for Civ Kit
Observation
A large or majority portion of people I interact with engage in illicit trade of some form. For some, this is buying drugs, for others its streaming/torrenting pirated movies, still others are interested in or have purchased 3d printed gun parts. I know multiple people who sold drugs on the silk road for bitcoin, still holding that bitcoin today despite not having a particular ideological conviction to it. Many of the younger crowd are buying/reselling the "flipper zero", and are already familiar with crypto.
Analysis
This activity is not going anywhere, and is a more organic market than I think can be provided by a pure maxi crowd. These goods and services are always in demand, and while you may lament their prevalence, the state has no business in regulating them. Just like bitcoin is most needed by dissidents, so too is a censorship resistant marketplace. If your plan is to sell a hand carved chair, then more power to you, but Craigslist works for that already.
An aspirational goal
Civ Kit should support the same goods and services as the silk road, with all the lightning integrations, federated relays, and tech goodness that we have to offer. Users should be able to shop around using a movie name or magnet link, with relays offering competitive freemium models, where ads for 3d printed guns and drugs can be inserted into a movie stream.