Copyright, is copy right?

How many of you have infringed copyright? In my second IS lesson, I learned about the consequences of infringing copyright and why it's illegal.
People infringe copyright because it is cheaper than buying original products. But what they're doing is ruining the company's future. Companies manufacture products to earn money. If people infringe their copyright, the company would not earn any money, and may have to cease operations, and the public would not be able to enjoy any future products that the company may manufacture, so both parties stand to lose out if we continue to illegally download product
Now, what is considered the infringement of copyright? For songs, movies, games, and so on, only 10% of the product may be copied, and it is only for personal use. For books, only 10% or one chapter of the book may be copied, and it too, must be for personal use. If we have to copy a product off the internet, we have to either ask for permission from the owners or credit the source; otherwise it would be an infringement of copyright, and we risk getting sued. So, if you don’t want to be sued, we should buy original products, and don’t do to others what you don’t want others to do to you.