The prototype for an ecosystem is not interesting, it's the momentum.
An ecosystem is not interesting as a built object.
It's only interesting if it's alive.
Alive things with network effects have momentum.
This is the all-important self-sustaining flame.
That essay is now 8 years old, but I think it still slaps!
Ecosystem building is very different than product building.
If you have to pick between the product or the ecosystem, pick the ecosystem.
(At least, after clearing the bar of a minimum-viable product)