Oh I doubt very much he has given up on that. He's smart enough to know that the delivery time is going to be extremely variable, and that most of the other problems involve figuring out how to make the place palatable to humans, which is just too far in the future right now. Don't bite off more than you can chew.

> which is just too far in the future right now.

How much time is needed to do the required research? Like, how long it would take to learn how to create an artificial biosphere on a small scale, so you can have a farm on the Moon or Mars? 10 years? 20 years? Maybe 50 years? Isn't now is the good time to start the research?