The document discusses the evolution of open source software from a movement to a market. It outlines how open source has undergone changes from the 1980s to present day, with increased adoption by companies and investment from vendors. While open source is not seen primarily as a cost saver by Australian firms, it offers benefits in applications, information, infrastructure, and connectivity layers of enterprises. The future of open source is predicted to include more business-level applications and integration into the overall software market by traditional vendors through consolidation and commoditization.