I also implemented MQTT for industrial machines to publish data to a broker. It was trivial to create a web UI that subscribed to that broker via MQTT over Webs

I also implemented MQTT for industrial machines to publish data to a broker. It was trivial to create a web UI that subscribed to that broker via MQTT over Websockets. But I noticed that colleagues had this impression that MQTT cannot be used on the web, so they wanted to build a conversion from MQTT to SignalR.. a quick search would've cleared it up, but they were so sure for some reason. After I showed them the demo they just went with MQTT as well.