That is clearly 'because they can' pricing, to offset the slimmer margins on lower volume, lower demand lenses.
Supply and Demand. In a capitalistic environment, people and companies should charge the most that they can to maximize their revenues. A well run business not not charge X% markup; they set prices to maximize profit. If the price goes to high, the customers will go to Nikon.
This is the same for employees, most employees don't look for a job that covers their basic costs, they look for a job that will pay them the most they can get for the skills that they have to offer.






