@RustyCrab oh that makes sense and has existed in spaces like manufacturing since the 80s. They still manufacture 486 class CPUs for old manufacturing systems that have existed forever.
The job I interviewed for today (a somewhat prominent mnufacturer of windows for new houses) has a bunch of those. Expanding them outside of that space would be an interesting idea. I remember the POS systems at my retail job just being those little Intel NUCs they used to make.
On that last point yeah that'll be impossible to make writing malware truly impractical it'd be like making a car that couldn't kill its occupants or pedestrians, a functional product but nothing like it originally was intended to be