What do customers NOT have ownership of when receiving value from services?

Customers retain ownership of specific costs - they pay for services - and of the business outcomes they seek to achieve, making this pairing incorrect for what customers lack ownership of.

While providers manage operational risks, customers do accept specific costs as part of the service exchange relationship, so 'specific costs and risks' does not accurately describe what customers lack ownership of in this context.

In ITIL, one of the defining characteristics of a service is that it shields the customer from having to manage specific risks (such as technology failure or availability risk) and the associated impacts when issues occur. The service provider assumes ownership of these operational risks and impacts so the customer can focus on achieving their desired business outcomes.

Outcomes are precisely what customers do own - achieving specific outcomes is the entire purpose of consuming a service - so outcomes cannot be listed among what customers lack ownership of.