[tathougies]

Perhaps it is. However, interestingly to note, most religions, like traditional Christianity and Islam, would actually be okay with an income sharing system (especially if the share was redeemable and payments set up to accomplish this) as opposed to an interest based system. It is unclear that an income sharing system is any morally worse than an interest bearing one, and there are reasons to think it is better.

[danenania]

Given that interest-bearing loans eventually convert to ISAs if they aren't paid (through wage garnishment), it seems hard to argue that they aren't strictly worse for the borrower.

[tathougies]

ISAs are not wage garnishment though. My ISA would be tied solely to the amount you're making and a non-interest-bearing predetermined price. Wage garnishment is a form of interest sharing, sure, but the underlying liability is growing at an exponential rate, which is what would be wrong.