They made music because they were paid to whether by church or as often nobility. For money, the definition of commercial. No one else could afford such frivolities to commission work. However, it was also consumed by the masses .. so popular and commercial though of what competition I can't speak.
Best not to post about things you apparently know next to nothing. Ever heard of patronage and the patron system? Patronage isn't commerce or commercialism, nothing close. And to say music for the courts of the nobility was consumed by the masses is so self-evidently wrong it isn't even funny.