I just read this excellent article from David Chappel. Its a very useful since it raises questions about promises of SOA and compares them with ground relaities.

I fully agree with David Chappel when he says:

With SOA as with objects before it, the reality is that removing
technical barriers to reuse is just the beginning. The human challenges that emerge once these more obvious problems are solved are more difficult to overcome. Whatever we might wish, the barriers to pervasive reuse of business
logic remain high.

I will not comment any further and will let you read this article.