Comment by zajio1am

Also, while above i describe it in a symmetric way, there is an important asymmetry - which side pays the mental load of deciding whether the request is appropriate. In the 'ask' culture, it is the answering side (as the asking side just asks for what they want), in the 'guess' culture, it is the asking side (as the answering side is expected to accept.).

From this point of view, it seems fair that such cost should pay the side initiating the communication.