As I recall we have IBM to thank for the Ctrl/capslock swap. The IBM PC keyboard featured that change and was a carry over from the selectric typewriter and possibly other IBM terminal keyboards. It was very annoying for those of us with muscle memory with Ctrl where it was supposed to be. Particularly for programs like Wordstar that had heavily used keys clustered within easy reach of the pinky finger resting on control in the "right" place.
In fact there appear to be programs and macros that still allow Wordstar mode in emacs (deprecated), vim and word. So I guess it's still popular. Supposedly George RR Martin still writes in Wordstar, preferring it to modern word processors.
In fact in a similar vein of using what you know I'm a little surprised there hasn't been a Kickstarter to reproduce the space cadet keyboard or similar just for the emacs fans out there.
[1] https://www.ebay.com/sch/i.html?_nkw=type+6+usb+sun&_trksid=...