I'm not an expert on interest rate securities, but with e.g., physical goods the bag holder has physical goods or contracts for supply that allows them to meet their obligations.
Is something similar not possible with interest rates? I imagine for instance someone with lots of cash and little desire for risk could lend their money to the banks at overnight rates, collect the interest, and then offer swaps against that steam, no? Of course, no one's going to get their 10th mansion off of this. A little riskier, someone holding variable payment debts could do the same, as long as the loans are diverse the risk could stay low. In this way, the risk at least shifts from "we're screwed if interest rates change" to "we're screwed if interest rates change and many diverse loans start to fail to make payments" in which case you're probably screwed regardless.
Is something similar not possible with interest rates? I imagine for instance someone with lots of cash and little desire for risk could lend their money to the banks at overnight rates, collect the interest, and then offer swaps against that steam, no? Of course, no one's going to get their 10th mansion off of this. A little riskier, someone holding variable payment debts could do the same, as long as the loans are diverse the risk could stay low. In this way, the risk at least shifts from "we're screwed if interest rates change" to "we're screwed if interest rates change and many diverse loans start to fail to make payments" in which case you're probably screwed regardless.