You make an incorrect assumption - that IP addresses are currently free (they are not, in either money or time) and that commoditizing them will increase their cost (there is significant evidence it will not).
You seem to think that commoditizing IP addresses will reduce their cost. Commoditization is changing an illiquid resource into a liquid resource, i.e. one that can readily be converted to cash in an open market. Since IP addresses are tightly tied to the network architecture, how can they ever be liquid? If they cannot become liquid then they can never be a commodity in the first place. For example, let's compare gold and uranium. Both metals are very valuable. Gold can be bought and sold at any time on an open market. It is a commodity. But uranium is not as liquid. There are few buyers and sellers. Trades happen too infrequently to establish an open market. There are restrictions on posession and transport of the material. In the end, uranium is not a commodity and is not liquid. IP adresses are more like uranium than gold. --Michael Dillon