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Everything that is 'copyleft' is inherently copyright. The protections enshrined by copyright protect 'copyleft' works.

• BuuQu9hu 10y ago
  The GPL and copyleft are not magic pixie dust. Just as proprietary software is pirated very frequently, so too do companies and individuals ignore copyleft licenses. Like the BSA spends money to enforce proprietary licenses, so to do the FSF, SFC, gplviolations.org and others have to spend money to enforce copyleft. There are also lots of violations of permissive licenses, but generally the authors of permissively licensed software do not bother to enforce their licenses.
  • ommunist 10y ago
    Yes, this is because OSS authors do not have union, which could have lawyers, which could do the job.
    • BuuQu9hu 10y ago
      The SFC functions sort of like a union, but they don't have very much funding though: https://sfconservancy.org/supporter/ https://sfconservancy.org/supporter/