Can we just build private space, lunar, and martian colonies? They could be financed by Tesla shareholders.

The colonisation of the world by Europeans started with government investment, but eventually became self-sustaining.

If these offworld colonies are free of political correctness, crime, taxes, welfare systems, and disease, and contain only beautiful, healthy, and intelligent people (via careful selection, including genetic screening and IQ tests, of permitted colonists), they could draw the best of humanity to them.