IT systems are neutral and do what they are supposed to do according to what their developers have implemented.
But IT systems are done and managed by humans. The roadmap is done by humans, budget allocation is done by humans, resource governance is done by humans. And when humans act, they have interests.
Some humans believe that they act in the best interest of the company, or shareholders, or innovation, or sustainability, or revenues, or profit, or the targets they have received (which, in larger organization may contradict each other) ... and also personal interests. Hopefully the latter are not too dominant.
In this field of various interests, departments have to think about which systems they need to have a close governance aka. ownership over some IT systems or not. Then the question arises: can I trust the "other" department to do the best to achieve my goals? Will I get my roadmap prioritized in a fair way? Do we have a common agreement on the business model(s)? There is no one size fits all answer to that question.
