Any definition of 'music industry' should refer to the set of musical activity done for profit. This extends far beyond the sign->record->license model that tho

Any definition of 'music industry' should refer to the set of musical activity done for profit. This extends far beyond the sign->record->license model that those four chase. Think of live music activity done as business (orchestras, stage works, live bands, professional church musicians), self-publishing musicians, sheet music, bespoke composition, and all the music work done around advertising. Even that barrier is artificial. If it weren't for copyright a lot of the barriers between music, dance, acting and other creative pursuits would evaporate. People could publish innovations without threats of legal attack or stifling paperwork overhead.