so they don't need to sell and then upgrade later? or maybe they don't want to buy professional grade at all, now there is another option to get into a constant aperture telephoto zoom without spending 2k.
The new Nikon 70-200mm f/4 lens that is expected to be announced next week will probably start shipping at the end of November, 2012. The price of the lens is expected to be in the $1,000-$1,300 range (depending on your local currency). I do not have the exact US price yet.