The commercials lie.
No one has short clipped conversations on those things. From what I have observed on several bus trips around the city, these things exist solely for the purpose of letting everyone within 20 feet hear both parts of the conversation. And the conversation, is nowhere near short. Gossip, plans, what are you doing, and other inane stuff I really don’t want to hear. It is not ‘how business gets done’. It is a form of torture on city buses. If plain old cell phone chatter is annoying, walkie talkie chatter is maddening.