Shared interests alone do not constitute trust without relationship valuation.

Evidence

Note that our merely having the same interests with respect to some matter does not meet the condition of trust as encapsulated interest, although it can often give me reason to expect you to do what I would want you to do or what would serve my interests (because it simultaneously serves yours). … The encapsulated-interest account does entail that the truster and the trusted have compatible interests over at least some matters, but such incentive compatibility, while necessary, is not sufficient for that account, which further requires that the trusted values the continuation of the relationship with the truster and has compatible interests at least in part for this reason. — Russell Hardin, Trust and Trustworthiness, 71

Categorization

• DEFINE: Clarifies that incentive compatibility is necessary but not sufficient — the trusted must value the relationship’s continuation.