Enterprise Architects - A large body of dark matter?

Forrester, Gardner and many others are discusing the bright future of EA. And most senior architects understand why its needed. Large companies claims they have it.

Yet I have noticed a trend in EA communities and forums; They are not very active. Typically there is a short burst of activity initially, then the interest drops.

Why is this? Is this a classical example of something everybody talk about, but nobody do? Or are there large masses of EA architects out there who arejust not active?