you're points are well received, my friend. you referred to motorex as competing in a niche market, which i concur with. ergo it lessens the company's ability to fit comfortably under any of the market power labels (monopoly, oligopoly, or monopolistic competition...i lack to mention perfect competition, because it is irrelevant in this debate). based on your arguments (and based on the typical economic standing of a monopoly), i feel that we may have reached a slight disagreement. yes, competition is reduced by the limited demand, but limited demand goes hand in hand with limited supply (thus limited supply is just a big factor as the limited demand). vis-a-vis, the monopoly operates to the left of the market equilibrium, providing a limited supply to the market, and in turn deriving it's profits from the limited demand (e.g. the only people that can afford to purchase the car). my thoughts aren't meant to provide argument; they are purely expressed from a similar but slightly skewed standpoint. you do relay a good point, however; if nissan were to bring the gtr stateside, the increase in the supply curve would force motorex to lessen their monopolistic hold on their niche, bringing the price of a skyline down to more moderate (equilibrium) levels.
so in summation, our views stand alike...motorex can either be classified as a monopoly or an oligopoly (w/ monopolistic attributes).
haha...this is hilarious...i parallel your enjoyment in this thread, Doc.