Thesis: When you purchase software you are not only buying the software itself but also the rights to use it.
As with videotapes and audio CD's, computer software is the property of the people who created it. When you purchase software you are not only buying the software itself but also the rights to use it. Using software without the rights given by the manufacturer or publisher is illegal no matter how you came across the software. Normally the permission to use the software is included as a license that accompanies the software package. .
In a sense you don't actually buy software, you purchase the rights or license to use that particular copy. The license may include permission to use and or distribute or reproduce the software. The terms of use are laid out in the licensing agreement. When you install a program or application you are usually prompted to read and then accept the terms within before proceeding with the installation. .
In most cases a licensed software package can only be installed on one computer at any one time. Quite often though there are provisions in the license to create a copy of the software for backup purposes. A backup might be needed in case the original CD or disk is damaged making it impossible to reinstall the programs. .
In addition to the license agreement, the software is protected by copyright and or patent laws, which prohibit or limits the unauthorized copying, distribution, and sale of the software. State and Federal laws also recognize the Internet and prohibit the uploading or downloading of copyright protected material online. .
If you were to install the same program onto two or more computers, (where the license stipulates), it could be seen as a breach of the licensing agreement. This is termed as software piracy. In this instance the publisher has the right to take legal action against you to see that you are prosecuted with criminal charges or lay a civil claim against you or your business for financial damages.