Those three come quickly to mind that were certainly trying very hard to be the " publicly accessible global information network with visual representations of corporate presence" you are speaking of.
While the others did, Gibson seemed not to have been aware of them, and he didn't even own a computer at the time.
You can tell his vision of cyberspace came entirely from his imagination because it doesn't even remotely resemble any actual computer systems of the day.
Those three come quickly to mind that were certainly trying very hard to be the " publicly accessible global information network with visual representations of corporate presence" you are speaking of.