Just happened to comment that there was no business model for small groups or colonies on Mars; that's unchanged and cannot change.
Well, he wants the company doing the business of moving cargo and passengers to and from Mars. Perhaps ....
Lot of hype, no business model for Mars.
By the way, something that should be obvious but apparently is not. Going to Mars is eight months in a SPACECRAFT, and that's one way. Musk is not building spacecraft. He is building launch rockets...
The spacecraft that could possibly do Mars is variants of the Constellation / Orion NASA project.