I dont think he ever said he would or could; iirc it was more about getting the engineering and science end of it worked on, getting proof of concept vehicles, and broadly getting the whole thing moving

Same with EVs and rockets, his plan as stated originally was to push the rest of the industry towards these things, doing it himself if need be, but relying on the inevitability of other major corporations and governments signing on to these ideas as well

And if anything this is validation for Elon, since the anti elon folks kept whining it was impossible or impractical