Right, so I suppose that the numerous gateways zoom and others need to offer are an additional problem which implies that these services have to do "something f

Right, so I suppose that the numerous gateways zoom and others need to offer are an additional problem which implies that these services have to do "something fishy" on the signaling server. Generally, WebRTC traffic does not need to go through a centralized sever, though. It's peer-to-peer after signaling if possible, and if not it can use routing servers that merely route encrypted traffic. So I am wondering if these providers largely make use of standard WebRTC infrastructure plus gateways and how much proprietary magic they have on top/as an alternative. Of course, in no scenario the traffic is really secure.