Stallman: When free programs are
copylefted, nobody can legally make non-free versions of them.
To stop the industry from appropriating bits of the free code and integrating them into non-public, industrial products, Stallman invented the concept of
Copyleft and the GPL (General Public Licence) by which the author of a software programme would allow everybody to copy, modify and distribute it, on condition that they would not prevent others from doing the same.
(108.) If feasible, two or three
copyleft options would be desirable, given the variety of options that have developed in the area of free software.
No, it's not possible to make as much money as a proprietary company can--open source and
copyleft will ensure this--and there's always going to be an astounding amount of work that has to be done without financial reward.
This sharing (also known as
Copyleft) is designed to create a software ecosystem where all changes, modifications and additions are provided to the community instead of being kept proprietary and closed.
However, based on its reception by the members of this list and the greater open source community, the community consensus required to support OSI approval does not currently appear to exist regarding the
copyleft provision of SSPL.
Some licenses, such as the GNU General Public License v3.0, may require you to publish your amended version under a similar license--this is known as a '
copyleft' license.