In the first trading session following the launch, SpaceX stock was down by more than 4%. It's likely because SpaceX is spending billions of dollars to build its artificial intelligence infrastructure -- and they're worried it won't pay off. Starship will be used to launch payloads into space for customers and, as the test flight showed, send more Starlink satellites into space. But some shareholders likely looked past the successful Starship test because SpaceX is more than just a rocket company, and its spending on its artificial intelligence projects is sky-high. Not only is that a large percentage of total spending, but overall capex spending is accelerating at the company.