Thanks for sending me down a little mini rabbit hole, this triggered some memories on old teletext decoders for Amiga back in the 90s.
Anyway, I distinctly remember my father getting a new TV with teletext around 1987, and I could play endlessly with that. Also amazing that up until way in the 2000s I knew people who relied on it as the primary source for basic headlines, weather, but also traffic information on trains as well as expected landing times for airplanes. Of course the football standings in the Dutch Eredivisie was possibly the most viewed page of all. Completely wiped out by the internet, but all in all a surprisingly long run for any tech.
p.s. online still available (Dutch)