"There are no differences in the concept. If I buy a movie, I can not then set up a site to stream it for free to people, even if I only allow one person to stream it at a time."

Let's make this very clear:

Quote
"The unauthorized reproduction or distribution of this copyrighted work is illegal. Criminal copyright infringement, including infringement without monetary gain, is investigated by the FBI and is punishable by up to five years in federal prison and a fine of $250,000."

When you "buy" your movie, you are not authorized to distribute it - even to one person at a time. Some Video companies will make a copy of your SW laserdiscs if you give them your own personal laserdiscs, meaning you own the actual media. Many VHS-to-DVD transfer companies will place your favorite songs on your DVD if you send in your own copy of the CD.

Libraries, on the other hand, have limited authorization in distributing copyrighted work, so long as it is returned. Libraries with copiers have all sorts of posted warnings about what you can and cannot copy, and to what extent. In this same manner, DVD rental shops have limited authorization as well. You, on the other hand, only have the right to personal home viewing. This is a crucial distinction that you need to keep in mind.