I didn't say that rich people are "in debt", I said they rely on debt and leverage.
A mortgage on a single home seems kind of like a special case, they tend to have unusual rules that insulate borrowers from the effect of interest rates to a certain extent, which otherwise work to cancel out the time-preference effect on money. Otherwise the working classes have their wealth tied to the sale of their labor, something (wages) which is notoriously sticky, hence a greater effect on them.
I don't disagree that the macroeconomic argument does incentivise rich people to use their wealth productively, but it is precisely this argument that relies on the idea that the wealthy have means available to them to protect the value of their wealth. You can't have the former and not the latter.
A mortgage on a single home seems kind of like a special case, they tend to have unusual rules that insulate borrowers from the effect of interest rates to a certain extent, which otherwise work to cancel out the time-preference effect on money. Otherwise the working classes have their wealth tied to the sale of their labor, something (wages) which is notoriously sticky, hence a greater effect on them.
I don't disagree that the macroeconomic argument does incentivise rich people to use their wealth productively, but it is precisely this argument that relies on the idea that the wealthy have means available to them to protect the value of their wealth. You can't have the former and not the latter.