The banks are simply our agents in this. Roughly, other "innovations" have made debt more dangerous over time. My paltry understanding is that one of the uses of inflation is to erode the value of debt.
Something terrible has happened to the tradeoff between the balance sheet and cash flow. A really crummy analogy is position v. velocity on quantum realms; as competitiveness has escalated, we get to where the trade between them is more severe. Also IMO, much as wages have stagnated, the value of capital goods has also.