Open Source Adoption by Corporations?

shakuni asks: "I work for a large network equipment vendor in the operations software business unit. One of the questions that I have been asking all my customers (large telecom service providers) is their position on adoption of open source software in their operations environment. The customers that I have interviewed don't comprise a a large enough sample to make sweeping statements. However, most large service providers (who have probably more than 80% of $1 trillion telecom market worldwide) seem very wary of open source, even though the high cost commercial software is hitting on them hard. How is open source adoption being encouraged amongst the financial and telecom behemoths, who are averse to taking risks with their IT systems? Are there specific organizations out there that actively address the IT manager and CTOs concerns about open source software? In other words, is there an enterprise Open Source initiative that pro-actively helps companies move in this direction?"