Satellite communication at the moment is very expensive (like dollars per kilobyte expensive) not because of the limitations of long distance wireless communica

Satellite communication at the moment is very expensive (like dollars per kilobyte expensive) not because of the limitations of long distance wireless communication in general, but because most of our satellite equipment up there is old and outdated. At some point as we developed world wide communications, laying down long distance fiber became cheaper than deploying communication satellites, and the existing satellites had enough capacity for the demand at the time. We stopped shooting up sattelites, but we developed much better wireless technologies (e.g. MIMO) down on earth, and SpaceX now has the means to deploy those in space and undercut the competitions offerings that is still being used heavily for specific use cases (e.g. broadcasting, marine, etc applications) It doesn't even have to be cheap, it just has to be cheaper than the competition. It's not quite world changing, but it's still a massive business (i guess) and would provide spaceX with some steady revenue stream. If it eventually becomes cheap enough for mass market that's just icing on the cake. Also note that any competition also will have to pay SpaceX for deployment, so SpaceX wins no matter what.