Re: The Computing Appliance
"The original vision that Apple's founders had was of a computer as an appliance"
The Apple ][ was very useful for all sorts of hardware and software customisation projects. I had one that emulated being a mainframe interface controller - and even communicated via the network to another emulating a video terminal cluster.
After that - Apple did make PCs that were effectively just "appliances". I moved to IBM PC clones in decent sized cases with user accessible buses.