While those are (mostly) dead now, it would be unfair to say they never took off. In their day some of these were huge,and enormously influential on what we have today.

News (NNTP) basically _was_ the Internet before HTTP came along, and still exists today, albeit in niche form. I still check News every day.

Your standard seems to be "things that were one popular, but have been replaced." whereas the 90's were full of ideas that literally never took off. Like cuecat https://en.m.wikipedia.org/wiki/CueCat

And don't get me started on the blink tag. That was huge, if anything, overused. That was activly killed (for good reason) because it made most Web pages beyond horrible. For some reason non-computer people weren't happy unless like half the site was blinking all the time. It was beyond terrible.

Frankly the jury is still out on VR headsets (an idea from the 60s that simply won't die.)

The marquee tag isn't dead: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/ma...

Just because something's dead now doesn't mean that it never took off.