Gibson talks about this in his prologue, and other anachronisms in Neuromancer (specifically his lack of imagination regarding phones)—he was envisioning the dull grey of a dead tv signal of his childhood, not the crazy black and white static of the late 20th and early 21st century; but the sentiment tracks even though he probably wasn’t event thinking that about any of the implications, given his displeasure of even being lumped in with cyberpunk as a genre (which I think is really confoundedly stupid on his part).