Well, they could do what all the other kids do in their situation who aren't good at football and not go to college at all...
They should consider themselves lucky.
On the first part - The sheer volume of grants-in-aid and subsidies available to those who come from low-income families have rendered "not going to college" a choice. I know that in California at least, if you come from a low0income family then you can get your tuition and enrollment fees waived at state schools. Student loans can fund your books. The only true barriers are distance (if you lack transportation), time, and family responsibilities.
As for considering themselves lucky, I agree. You should be grateful that you were born with natural physical abilities, be happy for your health, and that you are talented enough to be able to play sports at a high level. That being said, gratefulness for ones situation is one thing when a school is profitting from your existence on said teams while simultaneously charging you money to be there.
I'm not on the side that thinks student-athletes should be raking in cash and spending money all over the place, but I do think that these institutions ought to be kicking in cash for living expenses and such. I do like the idea of FBS-wide revenue sharing in regards to TV coverage (yes, the Alabamas brings in more TV cash than the Washingtons, but without those Washington in the system Alabama doesn't have anyone to be better than) to cover the cost of Student-Athletes. The schools can still profit!
Why can't every athlete (in all the sports - Football, Basketball, Track, Swimming, etc - but you don't get double for being in two sports) get a small piece of the pie? No more cash than they might make having a full-time $10/hour job outside of school. More money than that if the school can't provide food and dorms. Considering that's essentially the time commitment they are making, I think that's fair. Schools still rake in cash, student-athletes get a greater incentive for going out for sports and staying in school, and the players aren't suddenly turning into kids with too much cash or millionaires.