The past couple years, we have been doing research into the financial viability of creating food forests in close cooperation with Stichting Voedselbossen Nederland (Food Forests Foundation the Netherlands). They have developed a short video in which they explain the concept of food forests and how this concept was developed and has gained more traction. Note: the video is in Dutch, English subtitles available in YouTube.
Want to learn more about the findings of our research? See this project page of the HAS Hogeschool (in Dutch).