While on the subject, the SPI-Inc is not the only one. There is also the SFC. 
There is information in the -nfp archives regarding the SFC.

SPI originates from Debian, and the Debian Project leader is an Advisor to the 
SPI. As is one from PostgreSQL. I am not sure Gentoo would have such.

https://en.wikipedia.org/wiki/Software_in_the_Public_Interest
https://en.wikipedia.org/wiki/Software_Freedom_Conservancy

One thing I like about the SFC

"Finally, developers of Conservancy's member projects, when operating in their 
capacity as project leaders, could receive some protection from personal 
liability for their work on the project."

https://sfconservancy.org/about/

-- 
William L. Thomson Jr.