In hindsight, I have to suspect that Google and LG's plans all along was to create a phone with high specs at a low price point but restrict the supply as they "learned" to lower costs for their subsequent models. We've suspected that the Nexus 4 was most likely a loss making model for LG, but since they were rapidly losing mindshare, a loss making low'ish volume high end phone was something they were probably willing to stomach to partner with Google to get back in consumers' minds.
Maybe they'll be making profit from day 1 on the Nexus 5 this year