What makes the Portland region a "global leader" in Open Source?

The Portland region enjoys a long history of incubating, attracting and sustaining a very large talent pool for open source development. The Portland region is home to many of the premier providers of open source technology and related activities, including: dozens of user groups; top companies; top development projects and labs; nationally recognized programs at Portland State and Oregon State universities; both large and small software conference and "unconference" events such as OSCon, LinuxCon, Open Source Bridge and BarCamp, WhereCamp, DrupalCamp, and WordCamp.