The catch here, especially when comparing with MQTT, is that ROS is so much more than just IPC.
There was quite a bit of discussion about the build tool recently, which might help explain why things are the way they are. There is room for improvement, especially in the documentation, but we do have reasons for why things are like this.
If you are having problems, then I second the comments by @smac: Seeing those errors and hearing about the detail of the problems will go a long way to helping us find out specifically where we can improve.