Comment by hardaker

You may wish to additionally read the history of the Root Server System, which was written by the Root Server Operators and provides significant more context and facts about it's development:

https://www.icann.org/en/system/files/files/rssac-023-04nov1...

Another helpful document that explains why the diversity of Root Server Operator organizations is a good thing can be found in this document as well:

https://www.icann.org/en/system/files/files/rssac-042-17may1...