I wonder if this motivates the recent interest in "cyberdecks", computers cobbled together out of bits and bobs designed to resemble futuristic computers cobbled together out of bits and bobs, replete with offset displays, displays with unusual aspect ratios, nonstandard ergonomics and form factors, etc. The design of these devices is definitely intended to inject style and pizzazz into a field largely dominated by gray rectangular slabs.
Upon reading (or rather, listening to) Neuromancer again, I get the feeling that the original "cyberspace deck" envisioned by Gibson was a plain, rectilinear device not at all like the greeble-encrusted gadgets you find on r/cyberdeck. It's very sparsely described, but we do know it has a built-in keyboard, "trodes" for the brain-computer interface to serve as a display, and with all this talk of "ROM constructs" and "slotting in" it accepts software via cartridge. In short—it probably resembled a 1980s home computer, like a TI-99/4A or an Atari 800XL. Gibson's technological world in his early cyberpunk works is very much informed by a cursory examination of the tech of the day, combined with a lot of imagination and guesswork.
Modern cyberdecks draw much more inspiration from all the cyberpunk stuff that emerged after Neuromancer: movies like Strange Days and The Matrix; video games like Cyberpunk 2077, Shin Megami Tensei, and even Wipeout; and anime like Ghost in the Shell or Serial Experiments Lain, all of which provide glimpses into a world in which technology might have evolved, visually and ergonomically, in a different direction from what it did. I find this sort of technofetishism fascinating for its role as a sort of roleplay of an imaginative alternate universe where modern-era tech was still cool and fun. A specific subgenre of this is the Amiga enthusiast community, where people soup up old Amiga hardware with modern, very expensive FPGA-based addons (the nearest a solo hobbyist can get to modern "custom chips") in an effort to show what computing might be like had Commodore not failed.
I always through the aesthetic was meant to evoke the sense that this was a bespoke, personalized device - i.e. it has been modified and customized to work for exactly one user.
I don't think you can have a world where mass-market technology looks like that, because why would it? Engineers with time, resources and technology would do what they do now - design for manufacturability and mass-market appeal.
That's the thing. Most cyberdecks that I've seen weren't really designed to be used as daily drivers so much as to look cool and/or be fun to build. From an ergonomic standpoint, most people are pretty well served by a standard desktop or laptop form factor; those with special needs probably would not make the same choices to serve those needs as are made by cyberdeck builders. (I'm talking the tiny, off-center displays, knobs and toggle switches on the front panel, etc.) Of course the best, coolest builds are custom; that is a mode of expression by the builder. Kinda like the next level of case modding. But even then it's not just a custom-built computer, it's one with an aesthetic sense of "the street finds its own uses for things" in a crapsack futuristic environment like the ones Gibson wrote of.
There are some really cool devices that split the difference between cyberdecks and mass-market devices; the MNT Reform and DevTerm come to mind. Sweet-looking as they are, they don't veer too far from standard laptop ergonomics, the DevTerm choosing to emulate those of the popular Tandy 100 series of portable computers.