The first settlers in California weren't looking around and saying, "someday, this place will be famous for building microchips."

Las Vegas was founded because of the springs there. Nobody was thinking "casinos."

Right now, private space is mostly about tourists. When launch costs drop significantly below those of conventional launch systems, something quite interesting is going to start happening. I once worked on a study of the sorts of things you could do in space if transport was easier. Believe it or not, giant human-tended geosynchronous stations have a lot going for them. ("Human-tended" means visited on occasion by humans to change out systems, add new units, or do repairs. Geosynchronous orbit is not safe for more than very short visits, and even then only under certain conditions.)