Firstly I don't recall any such declaration of third parties saying they have no more interesdt in developing for the Wii.. In fact quite the contrary seems to be happening, I thought that was common knowledge?
What games? All I keep hearing is how every major upcoming release is announced for either PS3 or 360 or both, and how this or that franchise can't be expected to appear on Wii because it lacks the power.
Also why would Wii gamers shelve the console & quite buying games entirely in such an event?
Because they'd rather buy Call of Duty than Kiddie Karnival Kollection or Generic Mario Sports Title? I think most real gamers who own Wiis will own X360s or PS3s if they don't already. Heck most of the really nutso Nintendo fans I know already have 360s. We're talking people who stuck with Gamecube until almost the bitter end and didn't get PS2s until late 04 or even 05. The rest will tire of the novelty, maybe buy a few more Karnival Kollection games, then move on to other diversions.
Besides, Nintendo have already proven that they can sustain a platform almost entirely off the back of 1st party software.
Not entirely true. Although Nintendo software sales made up the bulk of Cube software sales, third parties still made up I think around half up until the last year or two. In any case, there were enough quality 3rd party games to make the system sustainable without resorting to another console. Sure, it didn't have the diversity of the PS2's lineup, but nearly every Cube owner had copies of games like Fight Night, Madden, Prince of Persia, Need for Speed, Sonic, etc. Wii has substantially fewer releases in that category. Do you know any traditional gamer that plays only Wii? I know a lot of Cube-only people who went 360+Wii for this gen, recognizing that around 90% of Wii releases are crap.
Finally i'd like to know exactly where you got such a rediculous idea that all software developers are geeks?
Because all software developers write computer code for a living. That pretty much automatically makes them geeks. I would suspect that the vast, vast majority of them actually
like computers, too, and that a huge portion of game developers also like video games a lot. I'm going to guess that there are few if any coders out there who had little interest in computers or programming, but got hired to write physics engines just kind of at random.