Makes perfect sense. The manufactures are after all in business to sell their wares.
In light of Vespobuteo's observations, I wonder whether Leica soldiered on with the 7x42 UV line in spite of a diminishing market because the UV were at least outselling Zeiss T FL and EDG versions (?). The 7x35 Trinovid/"Retrovid" makes sense from a marketing standpoint based on its beautiful vintage styling and reportedly compact, handy size. The SW Curio makes sense as well in that it is a true "shirt pocket" model with 3 mm EP and wide FOV. But these three seem to have swept the field at 7x, at least for the present.
I suspect the 7x42:s are made on order these days.
Not easy to find them in stock.