Why is fullframe more expensive than crop?

Question

Photo

Why is fullframe more expensive than crop?
After all, large pixels are easier to make

Answer 1

After all, large pixels are easier to make

They are large both there and there, and in soap dishes - the size of a pixel is measured in microns, and the possibilities of lithography are nanometers.
But to make a large sensor without defects is more difficult than a small one.

Answer 2

Marriage is a probabilistic value, proportional to the area of ​​the crystal. Also, with the same size silicon "wafer" but a larger individual rectangular chip, more material ends up in the waste.
Plus, full-frame cameras cater to more demanding users who are willing to pay more for a better set of camera features, including professional interfaces, more sophisticated software, faster processors, and mechanical reliability. The fact that larger optics are more difficult to make, I hope, does not need to be explained.