from what i read from it, i think this was enacted to protect intellectual property. for example, what if disney lost copyright? one of the biggest companies in the world does down to competition. yes competition is good, but so is the protection of the economic stability. a company the size of disney going down would mean much tighter budgeting or massive layoffs (ABC, and other subsidiaries). if this happened to enough companies, the economy goes into a bleak era as unemployment rises. this is just a possiblility, but i think laws like these are made to prevent such possibilities from happening.
or maybe i don't have such an uneducated, cynical, biased view on politics (The art or science of government or governing, especially the governing of a political entity, such as a nation, and the administration and control of its internal and external affairs.)