[MichaelGG]

Or if you want to flow delegated credentials, or use cross-system transactions. The enterprise stuff actually does something that can be useful inside a company.

Also, the major advantage of SOAP is that at least it has a service description. So generating clients is an easy one step process (and, having shipped such a service, when works on many platforms and languages reasonably well). All these new HTTP/JSON APIs require custom clients each time. Until they invent WSDL for such services... And full circle. Except JSON instead of XML, so it's totally OK.