Just talking about the model quality, yours deserve to be in the list, no doubt.
But there are surely a lot of other factors, as you mentioned, the main, perhaps, sales.
Now, you´re an interior designer looking for furniture, never will look for your boot ,there is a lot of interior designers out there.
Who will need such a good boot?, there must be some people that need exactly this, but not a lot.
Now think about the furniture model, it covers a wide variety of cases, looks funny and modern, this attracts people and the interior designer can make profit of this all.