I wonder how many people took the whole Mars colonization talk seriously. If Elon had been really serious about Mars colonization he would've had to commit a lot more resources to research, while reaching out to every major nation-state to get them to also commit on collaborating into making this a long-term reality. You can't brute-force a world-tier quest of this magnitude without significant global buy-in and without actually bringing in the absolute best-of-the-best of every relevant domain.
Also, Mars just kinda sucks. There's dust everywhere and it's nearly impossible to get it all off. Go outside one time in Mars and that dust will cling so tightly that it'll follow you into the cycle of reincarnation.
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