It may be that service-oriented architecture (SOA) isn't viewed as strategically within IT as many have been led to believe. Moreover, achieving SOA's goal of improving IT's alignment with the business may be difficult as the individual most responsible for this activity, the CIO, is not actively involved with their enterprise's SOA initiative(s). This lack of engagement by IT's "chief salesperson" to the business may explain the challenges that some users experience in making the business case for SOA.
Source: CIO, http://cio.com