> Today, any average person can do video calls across the world.

Yes, the book makes the point that computers and the Internet was one of the inventions that were and an improvement post-1970s.

But the productivity bump of those seem to have peaked around 2004 (the book has numbers up to 2014, as it was published in 2016). Apple's iSight was released in 2003:

* https://en.wikipedia.org/wiki/ISight

The first webcam was in 1993:

* https://en.wikipedia.org/wiki/Trojan_Room_coffee_pot

US labor productivity has increased considerably since just after that book was published, so I strongly doubt the peaking claim there.