The space industry is a multibillion-dollar business. According to a study by the German consulting firm Roland Berger and the Federation of German Industries (BDI), the market is worth around $600 billion (€516 billion) and growing. By 2040, it is predicted to be worth $2.32 trillion. That is about four times Germany's federal budget in 2025. And many want a slice of the new  private spaceflight  pie. Currently, some $150 billion is flowing into the "upstream market," which "comprises