It has been tried for several decades, despite the stupidity even believing it is possible. Fist, there is this thing that eventually, any music has to be made analog before it can be listened to. Analog can always be recorded again and with minimal effort and loss of quality these days by anybody that has a soundcard and some basic understanding of electronics. Second, even digital format cannot be secure against copying, unless you augment them with some death-corps that kills everybody that bought it immediately after they did.
This is on the same level of small children that think just wanting something enough will make it true. The children have the excuse of immaturity. These people have not.