Originally posted by Pontoneer Canon and Nikon were for many years the ‘also rans’ : Pentax outsold all of them put together . If Pentax established a separate premium brand , standing apart from their ‘ value for money ‘ brand , they could charge Leica or Hasselblad prices without needing to sell in large numbers : customers would be paying for exclusivity.
As for Canon and Nikon: commonly known slice of photo history; I didn't argue it, nor does it add much to your reasoning.
The business model of real or perceived premium brands like Leica and Hasselblad isn't exactly news either. For the time being, it seems to work reasonably well for Leica; how much longer Hasselblad will be able to sustain it remains to be seen (I personally doubt it).
The elephant in the room, however, is whether we want cheap amateur gear plus an extra line of forbiddingly expensive photo jewellery for display cases, or rather a range of excellent amateur-to-expert-level real-photography tools. Needless to say, I prefer the latter approach.
Also, the photo jewellery part is already covered to some extent by the various Limited-edition bodies, silver finish, etc. (Tellingly enough, many of their owners seem to be using theirs as, well, photography tools. Go figure.)