The term ecosystem is normally used in reference to biological communities. When people think about ecosystems they often visualize the different organisms and activities that coexist to maintain a balance of sustainable life.
As human beings, we model from what we know. When creating new things, humans often start with a single widget, and then expand until there is a system of widgets all interacting.
Thus, the cycle of widgets evolves. Some last for many years, others have a short-term existence. Popularity often determines the life span of a technology widget.
Schools using technology have an ecosystem of widgets. Very few people in a school seem to have a complete understanding of how all these widgets come together to form the web communication and processing which is essential for the day-to-day success of school life.
Unlike the biological complexity in a square meter of a rice paddy, the edtech ecosystem is a knowable system. It is a system everyone can learn, can discuss, and can protect.