You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete.
Sound enterprise architecture can be described (modeled) using a layered approach. Each layer brings enlightenment to the mission of the organization, allowing all parties to become active participants in defining the near-term architecture.
The business model specifies the enterprise's business goals, the products and services it produces, what additional products and services it desires to produce in the future, and the constraints restricting how these goals can be accomplished. It also includes such factors as time, budget, legal and regulatory restrictions, and so ...