Only if demand is relatively constant The demand for classic opera recordings is constant. Year after year people will buy the 1966 recording of Tristan & Isol

Only if demand is relatively constant The demand for classic opera recordings is constant. Year after year people will buy the 1966 recording of Tristan & Isolde at the Bayreuther Festspiele with Wolfgang Windgassen singing Tristan. These are reliable moneyspinners for the record companies, you'd expect to see initiatives to extend copyright.