I recall back in the 60's at the Museum of Science and Industry in Chi-Town they had an AT&T display which said we would have phones with screens we would see the other person on....
One thing about rotary phones on your land line they still come in crystal clear I cut the ringer out of one and put it by the bed.....
The technology for a video phone existed for decades, but it was never used.
The limiting factor was the amount of bandwidth available. If you recall early BBSs, where you would connect with a 300 baud modem to the phone line and take an hour or two to download a tiny, by today's standards, file. It would have been a sad, slow conversation trying to do video communications with that technology. Today, I'm connected to the internet by a strand of glass - a 2gig fiber connection. I move huge files around all the time and if it's not done in a few seconds I wonder what's wrong and start poking at things LOL Times change. Sometimes you have to wait a bit for technology to catch up to the idea.