I thought about this some, and I would probably agree with this statement. As an analogy, though it's possible to be a star through YouTube from anywhere in the country, to get the best gigs, you'll probably have to move to Los Angeles.

But, I couldn't help but think what Taleb would think about a person going great lengths just to have an "A+ career" and potentially fragile one with a single firm. If this person's career is currently B+, yet they have great control of their day to day lives and quality of it, it'd be foolish to try to fulfill this goal.