I think the fact that we are talking about this $2999 camera as "practically on par from a data throughput" perspective, with a $8000 camera is impressive all by itself. Not only throughput, but also the 100% viewfinder (bigger than the 1DSMKII and needs higher tolerances due to the 100%), in addition to the unprecedented I.S in the Full-Frame body, and the engineering around it (which none of the Canons have).
Agreed... I'm certainly not going to dissagree with that reasoning.
The price difference is certainly huge, and really, one has to wonder if the extra 5K is really worth the extra '2bits' of data per pixel, and the built in grip.
I will say though, in fairness though, the 1D also has the same throughput, as well as the D3 does too (roughly the same), but their prices aren't really that much higher then the likes of the A900 (Sure, resolution is different, but looking on the technology side).
I've always believe Sony would ruffle feathers, but baring in mind Sony's track record when it comes to intial prices, and tend to undercut their hardware price substantially even continuing to make losses (ala PS3, PS2) and making up for it in software sales, or perhipheral sales. When you look at the cost of their Zeiss lenses, they tend to be quite a bit more expensive then the equivalent from either Canon or Nikon too (personal observation).
Personally, I can't see how Canon can keep their 1Ds III price as high as it is now with such a 'competitor' on the market, especially when the 5D replacement will have to compete directly with it along with the D700.
And I think Canon is going to have a hard time all be it, not a hugely hard task, of working out a price that's going to save them face, while preventing the earlier adopters (because the 1dsIII isn't even a year old yet) the worry of having purchased the camera for as much as it costs now (back then).
Personally, I feel that once the descission is made, that's it. I made that choice, i spent the money... Now I have to get over it, and just put up with it. Technology progresses. What makes a 1ds III owner any different to say, someone who bought a 40D only to have seen a replacement a few weeks ago? (aside from say 6-7K)