The paragraph starting with the above sentence in the lecture overlooks [[price discrimination]], which is an important concept in the theory of the firm (especially monopolies). [[User:GregG|GregG]] 15:50, 10 February 2013 (EST) | The paragraph starting with the above sentence in the lecture overlooks [[price discrimination]], which is an important concept in the theory of the firm (especially monopolies). [[User:GregG|GregG]] 15:50, 10 February 2013 (EST) |