If you wanna sell music on concerts vinyl is too expensive/you would have to upfront too much money, CDs are dead, casettes however had some sort of revival. Vinyl is still king in those circles, but it requres you to be able to realistically finance and sell a run of 250 pieces to be economical.
I saw people buy casettes (with a download code) while not having a player — it is a neat physical artifact for some.