I have just read this and I think it is worth sharing... They are not my words but a citation from Pallab Sasha (TOGAF Linkedin group)

 

Six Reasons Why EA Should NOT be Assigned to the IT Department

6. EA ≠ IT Architecture

5. True EA leads to redistribution of authority, which is beyond CIO jurisdiction.

4. EA value proposition (i.e. standardization vs. innovation) is solely business realizable.

3. The primary goal of EA is to build coherent enterprises, not better IT systems.

2. Synthesis takes precedence over analysis.

1. EA failure is an organization failure, not an IT failure.