This is a big part of it; someone I know didn't even apply to HBS and kind of regrets not trying because they didn't at the time realize the scope of that netwo

This is a big part of it; someone I know didn't even apply to HBS and kind of regrets not trying because they didn't at the time realize the scope of that network. She ended up at Kellogg so still got a strong network, but Harvard is kind of unbeatable.