For Outernet to sell only hardware and broadcasting free is like the early days of TV. People marvel at having a free movie theater at home - news, weather, education, etc. and they tell their friends. Eventually more and more people bought their TV set and the programming still needs to get paid for. Eventually the commercials or subscriptions come.
Freemium would be where the majority of people get the service for free and the rest is paid by a very few. The problem with a freemium marketing model is that the people that pay the money to run the show get to say what the programming is.
But it does not have to be that way.
A grocery store that offers free appetizers is not a freemium business. But there has to be a main course and dessert in the restaurant that gets people to come in and spend money. I see the Wikipedia pages, world weather maps and a re-broadcast of APRS messages a little like the free appetizers to get you into the restaurant.
So what kinds of services would the “main dish” offering from Outernet really look like? Listener supported programming? Datacasts specific to you or your region?