Earlier quoted context omitted.
Yes, it wasn't a thing in the US, but basically all televisions in Europe had a text mode for this, and it was very popular when I was growing up in the 80s and 90s.
US televisions didn't have support for the blanking interval data and GUI, and it never got added to the NTSC standards. For a brief period in the 1980s a few companies tried to provide teletext service, either over modem or a UHF decoder to a home computer or - more bizarrely - as a read-only presentation done overnight when no other scheduled programming was being shown. Keyfax in Chicago: https://www.youtube.com/w…
That said, there were several other competing standards offered at the same time including https://en.wikipedia.org/wiki/Electra_(teletext)
The issue of course - like everything else with standards adoption in the states, the decoder wasn't mandated to be included with TV sets.