Not more ticked off than the early iPhone buyers when there was a price drop on that (to make things worse, the iPod Touch had all the great stuff of the iPhone minus the phone part (and maybe some online widgets, don't remember) for about $200 cheaper).
I think the reason we usually don't see upgrades of game consoles is that the people who bought the game console on day one want to be able to play the games in the console's later life too. To force them to buy a newer system, or to pay a significant amount for a vital add-on, is ridiculous. It's common for PC buyers though (although these days, I'm more concerned about whether a game runs on my aging system rather than whether it plays well. I don't have $2,000 to blow every time a new PC game comes out).
That doesn't mean we haven't seen upgrades before (well, okay, I haven't seen any true upgrades). The PS2 put out a slimline model that removed the hard drive and made it look attractively small (I'm sitting here and the PS2 is like three times smaller than the GameCube), although it lost some game compatibility in the process. A new model of the SNES was put out during its dying years, which I've never owned (I stand in disbelief to think it's a SNES, considering I only remember the old version). The N64 got an Expansion Pak to add an extra 4MB for use in games, which also worked with games that didn't support the Pak (makes me wonder what the point of the Jumper Pak was then. I kept mine around just in case). The PS3 has had firmware updates. I've left out other add-ons/upgrades because either they weren't successful, were only used with a few games, were purely supplemental instead of being required for later games, or I didn't know about them.
I agree that a price drop isn't going to happen anytime soon, since it's so difficult to find a Wii in stores. It's difficult to find a standalone Wii online for that matter (don't disprove me, let me keep my excuse for not buying one). Miyamoto said that he wanted the Wii priced cheaper but the price of the components made that impossible, which barely helps the sting that it's $50-$100 more than I expected. If you can find a Wii, go for it before someone else takes it.
To be honest, I wasn't expecting a drop in the PS3's price. Maybe two years after launch, but not a little over half a year. When I saw that the price drop was by $100, that still didn't seem like much of a cut. I think the PS3 is simply ahead of its time. But the same could be said of other consoles, as they're bound to be at their most expensive and least impressive during the early years (I say that because developers haven't yet worked out how to get the most out of the system). Near the end of a console's lifespan, you start to see some impressive games coming out, and that's on top of whatever price cuts were made since then. Plus, a huge library is built up by that time. The only price for waiting out on buying a console is that you have to hear people yak about Metal Gear Solid 3 and Psychonauts and Super Mario Galaxy and Sly Cooper and so on for years before you get around to playing them.
Not that I'm one to talk regarding waiting out. The PS2's the only console I waited out on, and that's because I had some silly grudge against non-Nintendo consoles. I fell hook line and sinker for the multiple Game Boy systems that came out, failing to realize that since each Game Boy was backwards compatible, the Game Boy Advance or DS was the only Game Boy I really needed. In hindsight, the Game Boy Pocket's the most worthless Game Boy I ever owned (even if it looks the coolest).