People use AI, therefore it has been adopted. Usage measures activity. Adoption means the work itself has changed and stays changed once attention moves on.
AI saves time, therefore it creates a return. Time saved is capacity, and capacity is only a return once someone decides what it is for. Absorbed quietly across a hundred calendars, it never appears anywhere.
A better outcome appears, therefore the organization captures the value. Improvements are captured when they reach a customer, a cost line, a risk position or a decision. Otherwise they remain local improvements that no one can point to.
Financial impact appears, therefore the value will endure. Some gains are structural and compound. Others depend on temporary conditions, erode as capability decays, or are competed away. Retention is a separate question from realization.