The high level of adoption is a testament to the value of the PMBOK Guide. It is flexible and not presriptive, not a methology, but best practices that can be incorporated into a methodology. Everyone wants to "jump on the bandwagon" and not take the time to re-invent something that has taken almost 40 years to perfect. As a next step, portions of the PMBOK Guide may be available as part of the emerging ISO standards for Project Management which will give the document more global recognition. The PMBOK Guide is currently an ANSI standard (American National Standards Institute).