Your unnecessarily rude tone aside (which is why I won’t bother to indulge you with an extensive reply), your comments do not agree with my experience or research, so I respectfully submit that you’re... not entirely right — or that you completely missed the context of my comments.
But the main one is: EVERY source I’ve ever seen says that vidicon-type telecines were displaced by flying-spot telecines fairly quickly, and later by linear CCD models. (Indeed, in modern terminology, “telecine” tends to refer to the line-scan type of device, whereas “film scanner” is used to indicate the frame-scan type.)
I was a bit bemused by your allegation of rudeness, & having a vague memory of you taking others to task in the same way, I looked back at your older postings.
You seem to have "form" for this, in that, whilst happy to post forthright comments of your own, you become offended if others do the same.
In the process, I looked at your profile, & from your age, it would seem that in the period of TV history in question, you went from an age of minus 5 to around 18.
In another posting, you say you've "spent all your working life on computers", so I fail to see that you have
any "experience" in TV equipment to speak of, so we are left with your "research".
I don't know what "sources" you used, but, if it was on the Internet, a cursory Google doesn't find much in the way of information, except for that from the very large organisations like the BBC.
Such places were well staffed & financed, & could afford to play with devices like Flying Spot Scanners, but for mainstream TV studios in cities throughout the world, vidicon Telecines, with all their limitations, were the "best they could get" over the, for most BW era.
Colour TV was a bit nightmarish for the USA as "early adopters", as 3 tube Studio cameras using IO cameras were huge & unwieldy, so they went for 2 vidicons plus one IO.(the later to obtain the required resolution for the luma component).
Ultimately, Plumbicons became (just) good enough for Studio use, & everybody sighed with relief!
This is about when Australia went to PAL colour in 1975.
Plumbicons also meant an improvement in Telecine chains, which of course, were now more complex, with 3 tubes .
The next iteration of Telecines were the CCD line scan/line store type in late 1970s/early '80s?
Between '65 & '88, I was working with Transmitters, both Broadcast & TV, so my knowledge of Studio practice during that time was pretty much second hand, but there was enough chatter between different companies to keep a fair idea on what was happening, quite apart from articles in industry magazines.
When I returned to Studio work in '88, there was a solitary Rank Cintel CCD Telecine chain, which looked a few years old, & was hardly ever used, so I think my dating is pretty close.
As for FFS.
This was not a more modern device which could supplant vidicon Telecines, but one of the oldest ones, dating back to the very beginnings of Television.
It had much potential------ the slide scanner versions
were capable of resolution out to the limits of the TV system, but the problems inherent with the full Telecine versions were profound, & to the best of my knowledge, they never played a part in the Australian TV industry, & I would doubt, anywhere else, except the BBC & their equivalents in Europe & the USA.