1 item in and of itself won't build demand. That is the kind of short term thinking that kills vendors.  I think that is the problem - every vendor expects a homerun out of the box - and is aggressively uninterested in building demand.

I'm sorry, but this isn't the whole of the story, either.  Frankly, anything that ISN'T a home run gets kicked out of the stores.  Vendors alone aren't the reason some product never hit the marketplace.  If a brokerage won't put the products in the store, customers will never see it.  Period.

So, please, don't solely blame vendors for the diversity you can't find - talk to the brokerage houses as well.