I'm just going to assume I worded my post poorly. I pointed those out and identified them as niche markets, because they are. Some how it appears the impression I gave was "there is no need for 64bit, ever!!!!!".
I believe that the disconnect here is that you are claiming the need for >4GB of RAM per process is a "niche market", while many others here are claiming it is something that many applications today would have an immediate use case for, and/or have to work around not having available.
