http://consoomf57i4dvc4hfeyh43v25yziu4s3cig4s7bcvlqls6l2nv47lad.onion/en/articles/why-nonfree-software-is-bad
But for simplicity’s sake we’ll go by the definition that Richard Stallman set for nonfree software. A piece of software is to be considered nonfree when it doesn’t respect all four fundamental freedoms, meaning that if at least one freedom is disregarded, the software cannot be called free.