You are comparing a loan to an equity. The ROI on equity usually is higher than on a loan, if all goes well. But the risks are higher. In this case, if you gra

You are comparing a loan to an equity. The ROI on equity usually is higher than on a loan, if all goes well. But the risks are higher. In this case, if you graduate AND work AND at an average salary AND have no health problem, you payout will be higher than on a loan. But if any of these condition is not met (eg: you have trouble finding a job, your starting salary is lower than expected, ...) then you don’t have to pay as much. It’s more expensive in a best case scenario, but much more comfortable and safer in any other case. The risk is shared between you and the « lender ».