Even if 0% of the laptop market cares about 64bits, the fact that AMDs 64bit chips run the old 32 bit software means your Jaguar analogy is very faulty.
I imagine that more than 10% of the market already cares about 64bits but most of the market doesn't care very much yet. If everything else is equal 64bit is a selling point for well over 10% of the laptop market but it might not be a very big selling point for more than a few percent.
Or in other words more thant 10% of the market CARES about 64bits, but less than, perhaps much less than, 10% of the market REQUIRES 64bit computing.
Tim