Requiring people to have a Google account or similar is probably the primary reason why competitors such as Zoom had any chance to begin with. They can call it a security feature as much as they like, though I suspect "loss leader" is more correct. But for business use, it means Google Meet is a no go. We simply can not require customers to have this or that account before they can join a video conference.
Whether it's Google Meet or Zoom, for a host, you need to sign up. For a participant, you don't need to. Correct me if I am wrong.