Entire /8s wouldn't last a single month at current demand (and demand is only going to continue to increase), while consolidating usage to free up the /8 would

Entire /8s wouldn't last a single month at current demand (and demand is only going to continue to increase), while consolidating usage to free up the /8 would take many times that long. It's simply not worth the time and cost for such a short-lived bandaid.