What a wonderful question to read. I feel a really good contact for you to make is with Ezra Hirawini from Nau Mai Rā – Aotearoa’s first Māori Power Company. https://www.facebook.com/naumairanz/
Ezra and his team have a dream to create a Māori business in every industry that gives back to iwi and Nau Mai Rā is their first project. They are also on the hunt for a charitable trust to be the home of their business but they may be able to share their process so far with you.
If this is of interest, drop me a line at firstname.lastname@example.org and I can connect you.