This chapter does not apply to a non-profit or for-profit entity that: I. Individually self-insures for property and liability risks; II. Participates in a risk pooling arrangement, including a risk retention group or a risk purchasing group, regulated under RSA 405-A, or is a captive insurer authorized in its state of domicile; or III. Comprises only units of local government or is a group that comprises local governments joined by an interlocal agreement authorized by RSA 5-B.