The problem now is created artificially by the banks
and the NAR with their corrupt practices.
Banks don’t sell foreclosures since they get free money from the FED, crooked realtors list houses as “Contingent” to allow their friend to buy the houses on the cheap and artificially lowering the supply of “Active” listings (contingent listings are just active listings set aside by realtors for in-house deals).
Cash buyers are actually doing us all a favor: by paying market prices they will lower the comps to where the market would be without government intervention.
Cash buyers/investors are not the source of this mess.