Either there is a code contributor pushing for functionality (Example sendfile/nginx) or a donor suggesting a path forward or a volunteer given free time.
Every foundation goals can be driven via sponsorship. At the end everything is simplify as who pays the bills at the end of the month?
This raises the old question: Who pays for the free in free software?
https://freebsdfoundation.org/our-donors/donors/?donationYea...