Ok. A permanent settlement on Mars. Given the personal control structure at play in his companies giving him autocratic control there, why would anyone believe he wouldn’t be anything but a Martian autocrat, and who in their right mind would willingly submit their own sovereignty to Emperor Musk the First of Mars? It’s not exactly like you could change your mind and walk away. You’d be literally putting your life in the hands of this wildly erratic person.
While my own views are likely closer to Musk's than I suspect yours are, I share those concerns. I don't think I'd be interested in moving there, at least not in the initial waves.
My optimistic view of the future looks more like "The Moon is a Harsh Mistress" than "Total Recall".