Elon Musk often gets things right because, among other talents, he has impeccable taste in engineering problems. What I mean by that is that he works on things which are hard enough to be very lucrative to get right but not so hard that he'll run out of resources part way through without having produced anything salable.
You'll notice that he said that it was "probably" not as hard and that he "might" work on it "someday". That's because he's smart enough to pick problems that he can make progress on that others aren't making. SpaceX does something that lots of people speculated might be possible but no-one was actually working on at the right scale and actually did it.
You'll notice that he said that it was "probably" not as hard and that he "might" work on it "someday". That's because he's smart enough to pick problems that he can make progress on that others aren't making. SpaceX does something that lots of people speculated might be possible but no-one was actually working on at the right scale and actually did it.