Thank you! All of this talk about teletypes, no one is mentioning how hard it would be to draw lowercase letters, monospaced, in an 8x8 grid.
https://damieng.com/blog/2011/02/20/typography-in-8-bits-sys...
The only notable exception I can think of is the ZX-80/81 which had notoriously rudimentary output capabilities because it was designed to be so cheap.
The followup model KC85/3 (https://floooh.github.io/tiny8bit/kc853.html) added the lowercase characters though, and the KC85/4 changed the font for better readability (but IMHO aesthetically less pleasing than the KC85/3 font): https://floooh.github.io/tiny8bit/kc854.html
...and when connecting such a machine to a TV via antenna input, reading the KC85/3 lowercase characters was indeed a bit of guesswork.