Its not just about datacenters in space.
Its about giving X (free speech) the protection of SpaceX's complete domination of the ultimate high ground & extremely strong finances.
SpaceX has by far the world's largest space launch capacity and this includes an ability to cause very big heavy things to fall from the sky on EU regulators that try to restrict free speech.
SpaceX also has the ability to deliver uncensored internet (including X) to anywhere on the planet with local regulators powerless to stop it. This includes direct to phone internet. Laser based connections between satellites in space mean ground stations on US soil (protected by 1st amendment) can connect the entire planet.
The Trump Admin has realised that censorship abroad ultimately causes censorship in the US and undermines democracy. Thus Trump and Musk will force free speech everywhere as a US strategic interest.
Elon Musk & SpaceX are huge strategic assets for the US. The US will use all means (including kinetic actions) to protect these assets, including from EU tyrants.
The whole data centers play is also a way to create even more demand for the huge amount of launch capability that Starship & Booster will bring on line.
With the hundreds of billions being spent on the AI race, what better way to secure humanity's future on Mars.