It can be true for iPad users (other target), but a "pro" could have a MP and a MBP for working when on-the-go.
Especially 15" and 17" models are quite expensive for the "average user".
It's just your opinion. A >2000$ MacBook Pro is definitely NOT a "consumer product". And we are going to have new MPs, in the next future.
Well, a Mac Pro owner can and usually has a laptop too but how many MBP owners have a Mac Pro? I know it sounds confusing but I hope you got my point.
Sure higher-end MBPs are expensive but if you want a bigger than 13" screen, you have to pay, I've seen hundreds of cases where OP has gotten a 17" for emailing, just because of the screen. But how many buys a Mac Pro for emailing? In MBPs you are forced to pay for the bigger screen, you don't have option for 2.4GHz 17" 1499$.
MacBook Pro is nowhere near a real Pro laptop, only thing that makes it pro is the three letters. It's still clearly meant for consumers, or does a pro laptop have 2 USBs?
All other Macs than Mac Pro are mainly meant for con- and prosumers. Mac Pro, on the other hand, is for pro users, in terms of performance, expandability, price etc.
I wouldn't be surprised if Apple discontinued Mac Pro as it requires a lot extra work. All drivers, configuration options, software updates etc.. costs a nice $. By the time, Apple has more and more dropped the support for pro market. Especially now as iMac uses desktop CPUs, Mac Pro, at its current price and specs, is not a good buy. Another loss for Mac Pro is better and stabler Hackintoshes which can be built for less than 1000$ and they are as fast as Mac Pro.
I'm not saying I want Mac Pro dead, but looking at Apple's current policy and dictatorship of Steve, it'd not surprise me. Apple is starting to be a mobile device company, not a pro device. Steve loves multitouch and things that work immediately out of box plus things that cannot be opened or upgraded by user.