The following table reports the distribution of profits ( on a per-disc basis) for diffrent steps in the vertical chain for music compact discs:

Artisc $ .60

Record company $ 1.80

Retailer. $ .60

Use the five forces to explain this pattern ( Note :there are about half a dozen major record companies including Warner,Sony and Polygram ,they are responsibile for signing up artists, hadling technical aspects of recording ,securing distributions,and promoting the record)