Exactly. Governments tend to accept "we lack the technical capability to comply with your request" (unless said capability is legally mandated, e.g. so-called

Exactly. Governments tend to accept "we lack the technical capability to comply with your request" (unless said capability is legally mandated, e.g. so-called "lawful intercept"). They do not tend to accept "we possess the technical capability to comply with your request but choose not to do so".