It isn't that people from Ivy League universities are unmotivated, it is that those people has so many options that unless you are a top company you almost surely wont see them unless there is something wrong with them.

> When I am hiring, for me the biggest things are motivation, curiosity and caring for your own career. If you don't show me those traits, I am very hesitant to hire you.

Yet you just explained that you hired this person just because they had a Top Ivy on their resume. You might not repeat that mistake but you did do it once.