I'm not making an argument for "software should be free" here. I'm trying to explain why people often try to copy software or media: it's trivially easy, obviously not requiring the original author's expertise. If they pay the author in such a situation, it's because they want to support the author, not because they are forced to. This ends up with quite little. When an enforcement agency (a publisher) intervenes, the amount extracted grows, but most of it is taken by said agency.