Completely agree with this. To over simplify... the % of the money you want to spend now roughly equates to the % of the stuff that's available to buy now.

Savers increase the spending power of current spenders by reducing the amount to be spent now, producers increase (or decrease) the spending power of money being currently spent bu producing more or less goods for sale.

If available for sale goes to 0, purchasing power of money being spent goes to 0.