It’s easy to share music with friends using a mobile hard drive or thumb drive. A DJ friend has over 200 GB of music, he let’s me pick what I like and put it on a thumb drive. What can they do about sneakernet transfers?
Exactly. Every kid has a laptop these days, and multi-GB USB flash drives are cheap. People will swap music, and the interactions will happen "under the radar". Even e-mailing mp3 files to each other.