Actually, I agree with you there. But let's take another approach at this:
First of all, what if Intel and AMD can achieve up to 5 hour battery life on such a laptop? Will that spark interest?
What if a SLI machine with a 19inch widescreen was priced comparably to a desktop?
We do have to think about heat index and cooling. Not to mention weight.
I'm sure that will never happen but, WidowPC is coming out with one. I find it rather interesting myself.
My friend is purchasing a new laptop for his College at Rochester Institute of Technology, he's getting a X2 4400+ w/ a 7800GTX, 2GB of RAM, and 2 60GB SATA 5400RPM drives in RAID 0 and 2 batteries, should be interesting to see his battery life.
BTW: He's paying $3,300 for it LOL, but he already spent $3,500 on a Dual AMD Opteron 64 Gaming/Converting Rig w/ SLI, 8 HDD's and 2GB of RAM heh.
~~Mad Mod Mike, pimpin' the world 1 rig at a time