A loaded iMac costs several hundred dollars MORE than a base model nMP. More importantly, it uses laptop, not even desktop, let alone workstation, parts--all so that it can house a screen that many people (myself included) do not need, and absolutely do not want.
I do agree that Apple seems relentlessly to ignore, obviously intentionally, those of us who want a $1,500 headless desktop (myself included). They must continue to conclude that this population will either migrate to a Mac Pro and spend the extra money, or be satisfied with a Mac Mini, because those are the only options that fetch Apple the margins it wants to earn, and it is willing to sacrifice some lost sales in order to make those margins, which of course it has every right to do. Apple has no obligation to satisfy my needs. None. It has the obligation to its shareholders to make decisions likely to earn it the most profits it can while building a viable business model. In that sense, from every indication, it is meeting its obligations quite well.