I just recall reading years ago that sports scholarships have to come from sports revenue. I guess for some colleges football would not generate revenue. I figure Div. I-AA football for schools that have it generate revenue.
Another guess is that even a losing Div. I-AA football team would give a school additional sports scholarships for players that could play in more than one sport.
It would be interesting to see just how many Div. I schools (to include a list) have no football whatsoever because these schools would have to have some other strong sports programs that make money for the school. I just recall being told that cost of running a college football team for a season is about the same as a college basketball team given mainly that basketball travels so much often for long periods of time.
Hence, I believe I posted that NCAA makes it real difficult for Div. I schools to compete on the Div. I level without football. Note: Some school play some Div. I sports because NCAA only has one Div. for that sport. The default Div. for NCAA is Div. I.