That sound you can hear ...
> TV technology was obvious a big talking point
.. is the world saying "Meh!".
Nobody cares about TV tech. Nobody, that is, apart from individuals who use the size of their equipment as a measure of, well, the size of their equipment and those locked in development labs producing ever-denser, more responsive, brighter, bigger, bendier displays - that will still be showing the same repeats (some in B&W, witness True Ents screening The Avengers, right back from 1965) that were not even new a generation ago.
Let's face it: we have enough TV. There's such a large back catalog that there is little need for anyone to make any more telly (apart from filling the gap left by expunging 1970's "non-persons" from ToTP repeats, and updating the few true science documentaries as better information becomes available) - as all the channels of 100% repeats show us, all too successfully with their ability to compete with the big-4 channels for audience share.
So if there's no need for more content, and we can easily satisfy the current generation and ones to come with the existing, already paid-for, known to be popular programmes - why would anyone need a bigger, better, bendier telly to watch it. It's not as if the medium has any affect on the message.