Do you not think someone who ran the ad department at NBC has a reputation?

"Legacy" doesn't mean "guy-on-the-street's perception of you."

?? I don't guess a guy on the street would have ever spared a thought for the head of NBC's ad department.

Correct, which does not mean she doesn't have a legacy.

That's exactly what it does mean. If you're not famous, you have no legacy.

Legacy means having a lasting impact on society or culture. As another example, the average Joe Schmoe has no clue that Fabrice Bellard even exists, yet Bellard inarguably has one helluva legacy.

On the other hand, there are many people who are famous, but will probably leave no legacy.

True, one can not be famous but still have a lasting impact on society. This is not one of those cases.

If you have enough money, any age can be retirement age. The whole concept of "retirement" is really for the working class anyway.