Or the converse! Think of the way GOG sells DRM-free installers -- GOG sells you a license, sure, just like everyone else, but they give you a DRM-free installe

Or the converse! Think of the way GOG sells DRM-free installers -- GOG sells you a license, sure, just like everyone else, but they give you a DRM-free installer, which is bit-perfect to the version of that installer shared on the Pirate Bay's eternal decentralized tracker. Can I pirate that installer? When I'm caught, which file is the pirated version, and which is the legitimate one I got from GOG's servers? If I wave around my emailed receipt, is that (moral) license enough?