Eduroam, and similar
I have always been impressed by the quality of Eduroam, and in an earlier life Janet, and all the other academic networks: look at the volumes of data that astronomers share, with apparent ease.
I suspect that the reason is management. The institutions are clearly in the hands of the academics, and the IT people are clearly expected to provide a working system.
Compare that to the commercial world, for example $MEGACORP type working, where IT has been outsourced to the likes of ATOS, and they have no understanding of who is the tail and who is the dog. Getting anything fixed or done is all but impossible.
Now look at government: government computing fails because the people who think they are in charge have not the faintest idea of what they want to do, and even less of how it may be done, so the people selling them systems can get away with murder.
Congratulations to the academic world for running things properly, I say!