SpaceX

American aerospace manufacturer and launch provider founded by Elon Musk in 2002 — which reduced launch costs by 10x through reusable rockets, became NASA's primary commercial partner, and is developing the Starship for Mars colonization.

Proved that a private company could develop orbital rockets at a fraction of government cost — Falcon 9 at $2,720/kg to orbit vs. $54,500/kg for the Space Shuttle — through vertical integration, first principles engineering, and a willingness to test to failure at speed.