> The license must not restrict anyone from making use of the program in a specific field of endeavor. For example, it may not restrict the program from being used in a business, or from being used for genetic research.
The GPL and AGPL require reciprocity but do not disallow commercial forks. Other licenses out there may disallow commerical forks, but they are not Open Source licenses.
https://opensource.org/osd#fields-of-endeavor
> 6. No Discrimination Against Fields of Endeavor
> The license must not restrict anyone from making use of the program in a specific field of endeavor. For example, it may not restrict the program from being used in a business, or from being used for genetic research.
The GPL and AGPL require reciprocity but do not disallow commercial forks. Other licenses out there may disallow commerical forks, but they are not Open Source licenses.