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Market Adjustments in outputs and average prices

Outputs and average prices for CDs and DVDs both rose throughout 1999 to 2000 (just before file sharing became ordinary), implying such that: (1) supply of prerecorded music should have grown. (2) law of demand does not apply to music. (3) demand for prerecorded music grew. (4) giant music companies manipulated consumers less effectively. (5) market for DVDs and CDs both are dynamically unstable.

Can anybody suggest me the proper explanation for given problem regarding Economics generally?

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