You're ignoring the feedback loop here. Supposedly wider availability of loans didn't increase enrollment, just tuitions. Before 1993 student loans weren't risk

You're ignoring the feedback loop here. Supposedly wider availability of loans didn't increase enrollment, just tuitions. Before 1993 student loans weren't riskier for the lender. The government was on the hook for the loan if the student defaulted. The lender was never in danger of not getting their money.