SpaceX has elbowed aside competitors and left government space agencies in the dust. But will investors provide the $75bn or so that Elon Musk is hoping for? https://www.economist.com/briefing/2026/05/21/elon-musk-is-going-all-in-on-an-unproven-technology?taid=6a1430655d59c2000166fb6f&utm_campaign=trueanthem&utm_medium=social&utm_source=voante