The Rise and Fall of Teletext

These Sorely missed services in the UK.  Today's widescreen HDTV's are still old style Teletext compatible just that none of the channels seems to want to do it.  

And it's also possible to provide digital Teletext akin to old teletext through the red button, like a digital interactive holiday channel did not long ago on Freeview channel 261 but I can't see it now.  Again apart from that ex interactive holiday channel, none of the other channels seema to want to do it.