[testguy34]

Because then it would just be some random person's opinion.

[flying_whale]

The opinion is as generic as that of a random person. There's nothing in the answer which provides an actual insight into the making of a billionaire.

Maybe there are no insights. Maybe it is all a sum of the generic things she spoke of, and pure luck of having successful consecutive ventures.

But to put it simply, it's not that great of a Quora answer.

[exelius]

It's a generic answer because it's a stupid question.

[balabaster]

It probably wouldn't have garnered as much attention, however, this appears to be a common sentiment of those largely considered rich and/or successful. It doesn't make the advice less valuable.