@J12t I like the angle on eu law.

But looking at xmpp's example, I don't think network size matter as much as potential.
It is a lot harder to do an EEE after the thing you are trying to extinguish has reached mass market, by then it is too late.

I don't think one reason is enough to do anything, as far as facebook or other companies are concerned.
One cannot build a business case with a single reason, so there has to be more than one factor.