Comment by cwillu
Software copyright law should acquire a concept of defense: if it's no longer profitable for you to maintain it, that should delimit the end of the copyright term, with a short grace period of (say) one year.
Software copyright law should acquire a concept of defense: if it's no longer profitable for you to maintain it, that should delimit the end of the copyright term, with a short grace period of (say) one year.
Hollywood accounting says no movie is ever profitable. Your proposed law would just create a perpetual copyright for companies with sufficiently creative accountants.