brooklyn19,
Albert Einstein dropped out of high school after he wrote his first scientific work, but later attended college. I don’t think his “dropping out” is comparable to what we’re discussing here, because most of those dropping out of yeshiva don’t plan to attend college. Even if they did, most colleges today require a high school diploma or GED.
Orville Wright did not finish high school; Wilbur did but didn’t receive his diploma. However, it may be harder to succeed today without a high school education than it was 100 years ago.
While Billy Joel and Tom Cruise have had successful careers without finishing high school, I don’t think most yeshiva students are interested in these types of careers (as tzippi noted).