Because of the resources the school decides to allocate to baseball scholarships, either because it has limited funds or because of the cost of offsetting additional baseball scholarships with women's scholarship opportunities.
My guess is that the Title IX squeeze is part of the reason because of how many men's sports the school offers. It is one of only 5 of the 14 A10 schools to offer all 9 A10 men's sports, plus it has football and wrestling teams that participate in other conferences. All those men's participation and scholarship opportunities need matching women's opportunities. At a school of only 2,000 students, that can put the squeeze on the baseball scholarship budget.
It may also be that their need-based financial aid and merit scholarship programs are sufficient to make it affordable for the players who fit at the school to attend.
