I'm convinced that the economic landscape has changed and that companies will have to find new ways of analysis in business management and business development. This has nothing to do with the DotCom boom that has gone bust, this has to do with the fundamental changes in speed and complexity in the environment in which businesses operate today.
I have addressed these issues at the University of Lausanne in a number of papers that can be found at:
Alexander Osterwalder (University of Lausanne)
and in my doctoral dissertation that can be found at:
The Business Model Ontology