So it is even worse than I thought. If many banks are in trouble since properties are often used to secure loans.
As for 'repayment ability' well that is all fine but these can change rapidly in the current economic environment. The fallback remains the security/collateral.
Defaults will happen even to "people of good means with a credit rating and reputation to protect" because circumstances change.
Greedy when others are fearful. Very fearful when others are greedy - to paraphrase Warren Buffett