The clue is in the title. One of the issues I see as an EA practitioner all the time is the fact that Enterprise Architecture typically falls within the IS/IT Department remit within many enterprise organizational structures and not where I believe it ought to be positioned. EA should be part of the Strategy Department under the CEO and therefore divorced from either the Supply or Demand side of the Enterprise, thereby governing from a neutral position and informing the executives of the enterprise.

EA positioned within IS/IT it's like having two opposing Lawyers in a court room where one of them is also acting as the Judge; the verdict is always only going to go one way.

Read up on it in my blog here: Who owns Enterprise Architecture?