This issue has been grossly mischaracterized.
All of these so-called extensions, including the Bono act, have been for the purpose of bringing each country's copyright term in line with all of the others.
I've heard nobody suggest that copyright should be extended beyond
the longest current term
That is not the question here. There is no actual move to ask any European country to shorten their term but to keep them the same as they are now. Have you bothered to read the Gower Report? It gives many reasons for keeping the SAME length (while also suggesting that 50 years is perhaps already too long but not asking that the term be shortened). Consider that the general way the European Community laws work IS to bring the laws in the various EC countries into conformity. Not just copyright laws, ALL laws. And if some are to make their laws less strong, if it is agreed to that is exactly what happens. Of course the usual thing that happens is that the weaker laws are brought up to the strength of the strongest law, which is why it is important that none of the individual EC countries lengthen their law because the EC might follow for ALL the other countries.and it's stupid to expect any country to be willing to shorten their copyright term as a means of conforming.
Bob Olhsson Audio Mastery, Nashville TN