While it can be possibly debated whether JPL is open source or not (Jelurida claims that it is open source), it doesnt seem to satisfy
the free software definition in regard to freedom 0: the freedom to run the program as you wish, for any purpose. In particular, article 12 of the JPL says:
[
] if you require a customized DLT Instance for internal use (i.e. a private blockchain) based on the DLT Software you must obtain permission or purchase a commercial license from the original Copyright Holder however he is not in any way obliged to grant permission or sell such a license.