ExploderWizard
Hero
I don't see it happening as much as the game stores changing. While there are a few places like the War Store, and of course ordering online, part of the hobby, that of miniatures, tends to rely more on seeing what you're getting in the first place. The miniatures, paint, brushes, etc... are generally not available at the massive discounts Amazon.com orders and they're expensive enough that some stores are dedicated to them.
I am totally with you on this. Sadly, minis that require assembly and painting are getting less popular with some gamers. The NOW generation wants to be able to play out of the box and there are some older gamers who might enjoy painting but lack the time due to the demands of real life. I still enjoy painting my own minis but it's becoming less common for the average rpg player to do so.
As far as seeing what you are getting, I enjoy that aspect of game stores for rpg books as well as mini related product. Stores that shrink wrap everything and don't provide a flip through copy of products kind of defeat the purpose of having physical inventory. If I want to buy something without examining it at all, then online buying will serve just as well.