Music companies are oligarchs, and they will cooperate and compete with each other. Now the charging situation is cooperation, so it is easy for oligarchs to find the same interests through the game method, and the charging situation is in their interest. The premise is that it belongs to the seller's monopoly for consumers. The theme of music consumer groups is young people, and a large part of them belong to students. These people don't have their own income. If you charge for music, you will definitely exclude some consumers! Only some consumers who are crazy about music, or who are well off, stay. Its music market is bound to decrease. Because the state of consumer oligopoly market cooperation is close to monopoly, and music in different time periods will be divided into different prices, so as to squeeze the rest of consumers dry. Therefore, there will definitely be free music among the music with different market prices, so as to attract consumers who have not yet entered the consumer group. In this way, charging is an inevitable trend, as long as music companies want to make money. On the other hand, the era of free download will not end, but there are restrictions, such as not hearing new songs and so on.