The farmers I have talked with seem knowledgable and one of them has been running her own biological farm for 29 years.
I am not sure whether it can compete with commercial farming. At the start of year a bio-deversity measurement was performed at which at three places one square meter was examined. I understand that only one earthworm was found. This year, a lot of rye was sown (together with flowers) in order to improve the quality of the soil. I understand that soil improvement is a slow process and needs many years.
From what I hear in the news, I understand that food production in the Netherlands is strongly influenced by big agracultural companies (who focus on scaling up and reducing the number of farmers) and that farmers who want to transition to biological farming often experience a lot of resistance from banks.