As for the music business itself, the key things have not changed that much. It operates like any business and money still keeps things moving.
Music - opera particularly - is a process which is endurable or successful only if it is achieved by people who love to collaborate.
My Dad died during the flu epidemic in 1918 when I was 4 years old. He left a lot of classical recordings behind that I began listening to at an early age, so he must have been a music lover.