when Patek Philippe has a discussion on how they will price their pieces. I am sure one of the considerations for Patek pricing is the robust demand for the Patek MR's ( many more people have the money and want to buy a Patek MR than they produce yearly ) hence the waiting list , long wait time, and exclusive application process.
I have noted this sort of business model in other businesses- like Ferrari sports cars, Harley Davidson ( I guess before they became public and could ratchet up production ) and even high end amateur telescopes where there are multi year waits and mystique about the brand.