That's the number AI boosters are spreading too "The TAM for AI is all of humanity - this includes every person and every company. So, imagine this huge pile of future revenue." I agree that TAM is likely huge but is SpaceX most suitable to capture that TAM? Unlikely. But for now everyone wants in on the AI hype train and FOMO of losing out one any company in the AI space.
In the long term most markets are duopoly with small competitors. And personally I see OpenAI and Anthropic duking it out rather than SpaceX.