I've listened to 6000 songs by 1500 different artists in the last year, and that's a drastic undercount due to offline listening and youtube viewing that isn't

I've listened to 6000 songs by 1500 different artists in the last year, and that's a drastic undercount due to offline listening and youtube viewing that isn't reported to last.fm. Buying music can't compete with that. Just sourcing the downloads would be a huge burden.