From the shelves of video stores to online platforms, the music space ranges from limited to unlimited. The author sorts out the development of music platforms, analyzes the impact of artificial intelligence on content supply, and expresses my views. Recently, I have developed a habit of opening Cloud Music every day to listen to the daily recommended songs, and then pick a few songs that feel good and add them to my playlist. As someone who grew text message service up listening to music, I suddenly found this to be an interesting phenomenon, because it didn't seem to be the way I listened to songs to find songs in the first place. Why did I make such a big shift as a listener? In line with the attitude of the product manager, I am going to figure out the ins and outs of this change based on my own experience. Limited space, the era of hit records The first medium I came into contact with music was the tape (as if showing my age), and a tape contained about 10 hits. The happiest thing of the week is to go to the video store and pick the tapes you want on the shelf. And the cassettes on this shelf were all the text message service music I could get my hands on. I reviewed the songs at that time, and they all came from the creation of popular singers and niche singers. No matter how high the quality of music is, it is difficult to climb the shelves of this small video store. Why? Because as the owner of a video store, he has to face two challenges, area restrictions and shelf restrictions . Let's talk about regional restrictions first. As the birthplace of popular culture, the songs produced by the United States must have a huge or even fanatical potential market in China (the friends who love listening to English songs have proved this), but at that time, they could not impress the owner of the small video store . On a national scale, there may be hundreds of millions of listeners willing to pay for this music, but there may be only a few in this small text message service town. Under geographical constraints, if the audience is too scattered, it means that there is no audience at all, and without an audience, there is no income. Let's talk about shelf restrictions. At that time, the main source of income for singers was the sales of audio-visual works, and audio-visual stores scattered all over the country were their sales channels. But this creates a supply imbalance, where there are not enough shelves in a small video store to hold all the recordings of the singers. And you have to sell at least.