The following article :
http://biztech2.in.com/india/news/enterprise-solutions/enterprise-architecture-enters-trough-of-disillusionment-gartner/88972/0 argues to the point of how EA when mature should be the bridge to help Business Strategy become IT Strategy ... not vice versa. Business Strategies should always drive Technology. You don't start with a Technological solution or Tool and try to mold the business around it.
Here is an intresting quote from the Article:
"The artificial walls between business and IT are crashing down, and EA is the bridge to integrate business and IT," said Philip Allega, Research Vice President, Gartner. "EA's original promise was its ability to provide future safe guidance given the desires and vision of an organisation's senior leadership team. As IT roles shift away from technology management to enterprise management, EA is suited to bring clarity to these blurred boundaries, and, by 2015, increased adoption of EA processes and uses by business will further IT's alignment with the organisation's culture, future-state vision and delivery of business value outcomes."
I agree with this assessment.