Elon Musk has become the world’s first trillionaire thanks to his company SpaceX, which now has the biggest IPO of all time. Public trading in the company has put it's valuation at over $2tn. The eye-watering sums of money pouring into AI are also boosting other tech titans, including OpenAI and Anthropic. Both companies are expected to go public this year with nearly trillion-dollar valuations. The Guardian’s US tech editor Blake Montgomery tells Kai Wright that with these IPOs, all our financi