well i disagree. I look at it like a computer. if you buy a computer from dell and it has 64mb of memory. then you decide sh!t with all the work I do I really need 128mb. it isnt' dell's obligation to give it to you for free.
Now I will say this, what would be nice would be the ability to buy the ram and install it ourselves just like the firmware upgrade should be. we should not have to be at the mercy of nikon.
Lastly, I will say that if they offered a Ram upgrade to the D100 I would have no problem paying for it, as for me I think it's quite valuable.