SpaceX's $2 trillion IPO is the largest in history, combining a dominant rocket launch business, booming Starlink internet service, struggling AI ventures, and ambitious space data centers into one polarizing mega-company. Whether overvalued at 100x revenue or undervalued as the 'Saudi Arabia of compute' hinges entirely on whether Elon Musk can deliver Starship rockets and orbital data centers—technological bets that could reshape global energy and AI infrastructure. Starlink has become a $11 billion revenue, 40% EBITDA-margin cash cow with 10 million subscribers, making rural internet a genuine business moat independent of SpaceX's other ventures.