Photo forums are full of "Sony doesn't have enough lenses" messages. Even the insane pace we see now seems not enough to please the crowds.
Sony prices are indeed high, but new gear from the competition is not cheap either.
As income of professional photographers is going down due to market pressure (see how many newspapers laid off in-house staff), I guess the target now is rich amateurs who believe they need corner sharpness wide open.
On the other side, if the megapixel race goes on, maybe wide open will soon be the only aperture without diffraction killing the resolution.
I find it insane that people are still complaining, even though their last refuge now is the lack of "big white" class long telephotos... or an AF 35mm f/2. Me, I would've been totally fine with the Sony E-mount lens selection since the moment the 16-35/4 had hit the shelves...