My mortgage payment is small enough that a lot of people could easily afford a single payment if I had defaulted on it. That doesn’t mean they could just pay off the entire remainder of a mortgage.

Paying off the current payment doesn’t deal with the remaining $300B debt that they need to service. It just kicks the can down the road a few days.

Good luck finding a multi-billionaire that’s going to swoop in and make $148M payments on a regularly recurring basis for the next decade.

This is just the interest payment on a $300B debt.