still isn't obvious

Not sure what to say. There's finance and there's finance. HYPS and maybe two or three others have pipelines for pushing kids to the banks and hedge funds at the very top. And yes, I mean undergrad. The fourth or fifth of each class that goes into finance isn't doing it to sell mutual funds in mid-sized cities. Many bail after a few years, but those who stay in can easily become millionaires, and some do it before their former classmates in med school finish their residencies.