Traditional Communication Formats v SGML, Metadata, Dublin Core: Traditional Communication Formats: MARC is far from dead

This section is entitled Traditional Communication Formats v SGML, Metadata, Dublin Core. Is there a subject here that needs to be debated? I hope to show that the two, the traditional and the more recent formats, are complimentary not adversary. But to do this I need to explain why there is even a feeling that the traditional and the new might be opposed. I need to explain why the question has been asked. I am going to try and answer two questions: Do we still need MARC?; and Are MARC and the other 'formats' competing for the same role