It comes down to two things.
1. They don't know what the fans want.
2. They don't care what the fans want.
I'm at the wrong end of the demographic curve for figures but I do like ships and would buy accurate representations of just about any Trek ship I could find. But I'm not going to wander all over the place to find them.
I can't believe the mentality of a store that puts something off in a corner and then wonders why nobody buys it.
The market is supposed to be about supply and demand. We're the demand, where's the supply?