If you don't like what you're doing, you can always pick up your needle and move to another groove.
Even if it was a difficult operation to copy a song, it only takes one person to do it. After that the spread of the song via the Internet or other means of propagation is only limited by the honesty of the users.
It will be said, however, that protection tends to destroy commerce, the civilizer of mankind. Directly the reverse, however, is the fact.