Not so sure about being bullied or beaten up. More like ego. People who felt unimportant and unpopular throughout life, finally surround themselves with like-minded people, and still feel like second class citizens even within their own bubble.
Also very few people think (or care) how much effort student-athletes put in. True story: I was in a work mtg with a group of executives, when one (a fellow Penn Stater) whined about college athletes getting special access to tutors. Everybody agreed with her ... until I opened my big mouth.
I told them: Let's all go to the gym for the next hour. We'll do heavy squats, heavy deadlifts, heavy overhead presses, and then fill out the hour with wind sprints. Then let's go immediately into mtgs for the rest of the day -- but without any of the project engineers or technical experts in the room -- they would be our "tutors." Our work day won't end at 5 pm. We'll do it again at 5 am tomorrow, and every day for 4 years. Who's in?
Amazing how quickly the mtg shifted to the actual business.