...every new medium derives from an old one, which it later supersedes...

Electronic Mail references normal Mail, but when was the last time you sent a regular mail...

The Horseless Carriage, aka Automobile, once derived from the Carriage... it even had the same wheels and the same format... when was the last time you drove with a horse in front....

Smartphones and tables might look like a PC, feel like a PC and act like a PC... but they aren't....

And to the contraire, CD weren't the ones that really buried Vinyls, it was MP3, which was possible after the digitalization pushed forward by the CD... but guess what... MP3 offer lower sound quality than CD and even lower than Vinyl... which capture the full range not just 16-bit or 24-bit samples...

Vacuum tubes offer far better amplification scope than transistors, and CRTs offer a better contrast rate than LCD...

And guess what... typewriters on the late 60's were only the realm of "personal assistants" (then called secretaries) which offered the advantage of having a pretty lady at your side that help with the letters... which disappeared once women escalated the power ladder...

So yes... none of the follow ups were near the old ones...