SpaceX celebrates the satellite business as a money-making venture fueling a quest to launch rockets and reach Mars.SpaceX’s prized Starlink satellite business is still burning through more cash than it brings in. People familiar with the finances of one of the world’s most valuable private companies say Starlink has — at times — lost hundreds of dollars on each of the millions of ground terminals it ships, casting doubt on claims by Chief Executive Officer Elon Musk and the company’s top brass ...