MaxExposure wrote in post #10514232
a jack of all trades master of none doesn't sound like a great idea, at least not on their specialized flagship models
I would add that this is so at least for now.
I highly believe that after the Nikon D4, when at some point comes out the Canon 1D MK5, many photographers do have a camera which covers 100% of their needs. My assumptions being that the 1D MK5 is something like 21MP FF.
That being said, many professionals use only D700 for example, or 5D MK1 I know of, i.e. not at all big cameras. The upgrade is based on business needs, when price is justified. Also, for many the 1D size is too heavy (remember, this is not about the photographers look but about the tool and results and conveniency and price etc.). Latest and the greatest is only for rich amateurs and the minority of top pros (there are plenty of professionals still using the 1D MK3 or even older models).