Retailers expected the Wii to fail?

It seems like that to me anyway. In fact, when I walk into most shops, the first thing that hits me is a huge PS2/PS3/PSP row of shelves. Followed by a smaller Xbox/360 shelf and lastly, in the dusty old corner where nobody looks is the Wii/DS stuff. The GBA and Gamecube are long gone and never really had a presence.

Let's take a look at the DS vs. PSP situation. I'll admit that at the start it did look that the PSP was going to beat the DS. So I can understand why in the beginning they focused more on the PSP. But now that it is brutally obvious that the DS is going to be triumphant, why do they continue to cram the DS stuff in a corner, while the PSP is up in the front, glorified, with all the staff trying to stop people buying DS games.

Onto the Wii vs. PS3 vs. Xbox360. This really frustrates me because when the 360 was released the gave it decent shelf space. Not too much, but it wasn't crammed away like the DS stuff. Then came the Wii, which was fully prebooked, with more people waiting on hand. And guess how much shelf space they gave it? Three measly rows on a tiny shelf. It has now expanded to 5 shelves because a people are starting to take notice of it.
Now when the PS3 was released, though only 2 people prebooked it, it was given TWO whole columns. Thats 16 shelves.

I just hope this store, and I'm sure other stores realize that the Wii is a smash hit and change their tune before it's too late.