By combining ai with space, in addition to any other plays that he might be playing around legal or financial areas, he's positioning (marketing) spaceX for the bandwagon that everyone else might jump into to deploy a space datacentre. He's providing the medium (spacex rockets) to realise this potentially unfeasible idea. He makes additional money that way - to then create a new type of money-making fuel after that. HN audience might be calculative - but the rest of the population is far less so.
This might also be a new vehicle to mask any space warfare technology deployments.
This might also be a new vehicle to mask any space warfare technology deployments.