If you want to know whether you're the right sort of person to start a startup, ask yourself whether you're relentlessly resourceful.
What if I'm not, but want to be?
You say it can be taught "surprisingly often", but then in the same paragraph say people either are (latently) or are not. This seems exactly the opposite of being able to teach it...
One strategy for becoming relentlessly resourceful is to refuse to accept conditions you find undesirable. And as someone who has taken the oath to become relentlessly resourceful, you illustrate your refusal of external circumstances by finding a resolution that ultimately solves the issue or works around the issue (a.k.a. a hack).
What if I'm not, but want to be?
You say it can be taught "surprisingly often", but then in the same paragraph say people either are (latently) or are not. This seems exactly the opposite of being able to teach it...