i wonder if also some of this educational content could be actually funded, i mean i remember watching math demonstration on youtube it was quite useful, no reason for people producing this kind of material to get funded
In most cases it will not be necessary to fund the educational movies, but sometimes it makes perfect sense. For example, a film about biology or nature might be filmed, which requires traveling to other countries, renting a flight or diving.
I don't really think it will work with educational content or documentaries. Such movies are usually created to spread awareness about some problem or to attract attention. There are special funds and agencies for this, sometimes even governmental.