we still have it. WhatsApp video chat is the most widely used video chat app.
> we already had p2p calling with Skype; we've regressed in that area
Skype was barely present on mobile and got acquired by Microsoft before Mobile took off. Then it was as good as dead. So we have in fact progressed massively that anyone in Asia with a crappy handset and a decent connection can still have a video chat with anyone else in the world.
> Music, movies, TV could be mostly free if we had retained the original 28 year copyright period
And world would be so much better if no one was greedy. The fact is that we have not retained original copyright period and the reasons are beyond adtech, so what are you gonna do about it? Also, that doesn't solve the problem of long-tail content which is massively entertaining.
> The things you list are all free or nearly free to run with modern technology
Lol wut? Try running your own Youtube and you will discover massive technical problems (storage, network bandwidth, content moderation, discovery etc).
> Ads enable market capture
Google tried YT premium and look at its adoption numbers. It starts at 89 INR in India (less than a USD) and yet its adoption is minimal. 89 INR is cheap for at least a few hundred million Indians. People simply prefer ads over paying up.