This is the lived thesis of https://www.instagram.com/flavorkit/channel/?hl=en who's sort of a travelling amateur farmer (in the sense of self-educated through love of the topic) and constantly talking about soil as an ecosystem and the very important role fungus plays in that ecosystem.
She's an excellent person to follow if you want to apply this stuff to your home gardening.
This has been a huge topic in permaculture and organic gardening circles for a while.
A major proponent of the 'soil food web' is Dr. Elaine Ingham who has written a ton on the topic. From a more intuitive and less scientifically 'rigorous' angle you have Korean Natural Farming techniques where you sample 'indigenous microbes' from healthy natural environments and then introduce them into your garden.
Good point, but I happened to (though might have not) think of it, just before I first posted my above comment. So I had changed the wording slightly to what it is (and made no edit after that). That is, I made it say:
KNF seems to be based on basically based on the same principles as Dr. Ingham talks about
rather than:
KNF seems to be based on Dr. Ingham's principles.
The former version implies that both could have come from the same source (of principles), while the latter implies that KNF came from her work, which I did not mean, from the start, though it may be so.
But from its Wikipedia page, KNF seems older than when she likely started her research, but not sure. In any case, the KNF inventor and she could have made their discoveriess independently, as sometimes happens.
And yes, I just noticed that the former version has a grammatical error, an extra "based on" after the word "basically". Missed that earlier.
She's an excellent person to follow if you want to apply this stuff to your home gardening.