The enabler of an ecosystem is not the technology, but the schelling point.

The actual tech often looks dinky.

Perhaps just a particular novel assemblage of existing components.

The reason an ecosystem becomes alive is not because of the components, but because its assemblage provides a viable schelling point.

As more participants are attracted to the schelling point, it makes the schelling point even stronger: a gravity well.

What is most important is that first gasp of air as it crosses the rubicon to viability and becomes gloriously alive.