Elon Musk’s plan for SpaceX to “become a major mobile carrier in the U.S.” sends shares of the nation’s big three wireless carriers sliding by double digits, wiping out more than $50 billion in market value before lunch. ↧ Elon Musk’s growing SpaceX empire sends AT&T, Verizon and T-Mobil... The company announced plans to “become a major mobile carrier in the U,S.” in part by buying spectrum and deploying satellites for its Starlink service.