Jailing people for sharing has not boosted music sales in Japan.

Even if it had done so, that would not justify it. Sharing is good, and sharing is our right; if the copyright industry tries to deny this right, we must crush it so it can no longer threaten us. However, the fact that this did not achieve its supposed goal might be useful in convincing politicians that care more about the copyright industry's money than about people.

On the other hand, they might instead try executing anyone that shares.