Z:gnu-www-ja-free-software-even-more-important--d8b986-The first two freedoms mean ea/en

The first two freedoms mean each user can exercise individual control over the program. With the other two freedoms, any group of users can together exercise collective control over the program. With all four freedoms, the users fully control the program. If any of them is missing or inadequate, the program is proprietary (nonfree), and unjust.