I think its more of a shipping issue than anything. Anyone trying to order even a simple detolf from IKEA will understand just how expensive shipping can be on these things. Its not like Sideshow has warehouse throughout the country (or world) that you could go and pick one up at. The shipping could be equal to the price of the cabinet in some cases, and therefore just not worth it. It would certainly be a cool thing for them to do, but its just cost prohibitive I think. I can't imagine they sell very many of the 1:1 full statues and I would think the sales of cabinets would be about equal or slightly less than those. If shipping weren't a factor, I could see something like this being very popular. Someone like IKEA or another nationwide/global furniture chain (or maybe something like FYE/Best Buy) would have to partner with them for it to even become remotely possible. And even then only new, popular licenses like Marvel, Star Wars, or DC would probably do well enough for retailer interest. You won't get your horror or cult classic cabinets made anytime soon through that venture.
I do find it odd they don't at least recommend a good cabinet or display mantle for certain products. Makes you wonder if they take into account item sizes based on popular shelves like detolfs or billys from IKEA. If something isn't easy to display for most folks, it makes it harder to sell to them. Certainly an interesting aspect to the hobby to consider. I, like many others, prefer the detolfs because they look nice and are very cheap. $60 beats the $500+ a nice wooden cabinet will run you, and with likely less visible retail space. Detolfs can be viewed 360 if desired. But they don't hold large statues. They're good for 1:6 mostly and smaller PFs.
