Does it actually address the source of the problem though? Illiquidity is caused by people hoarding wealth and not circulating it in the economy. Printing money gets more cash in the system but does not free up the hoarded wealth which is still locked up in assets that can remain unproductive. This seems like a temporary patch. If you take your example where there is not enough cash to pay a plumber, the cash is amassed in the accounts of a small number of people that are unable to generate enough work to keep all of the plumbers employed. You print more money to fix the supply problem but this immediately generates another; who gets the new cash first? We give it to institutions that will lend it so that we can reuse the existing system to vet people worthy of loans. So the credit worthy get access to new money and maybe they use it to do new construction or renovations that require plumbers. The plumbers, and others, now have income again. Problem solved? Well no, what about the original wealth that was hoarded? If it was kept as dollars it’s now depreciating but it’s likely that as soon as that started happening it would have been converted into another form that would retain its value. There are a limited set of assets that retain their value in face of inflation so we would see circulation in that part of the economy up until all of the original wealth had been converted into a stable form. It would still be driven by a small number of people though so the impact would be limited. What happens if you don’t continue to print money? I would think it would eventually find its way into one of these asset traps where it would then remain and we’d wind up right back at the start. So keep pumping new money in? But now it no longer affects the original wealth since that has been converted into other forms so the original problem will remain unsolved and you’ll need to keep the tap on forever so you don’t run out of money.
A better solution in my mind would have been to directly force the original wealth back into the system.
A better solution in my mind would have been to directly force the original wealth back into the system.