Relationship between data volume and media synchronization

Seth Godin has published an interesting diagram and his conclusions on the relationship between the amount of data (bandwidth) and synchronization of media consumption.

Asynchrony means that the author of the message and the recipient are separated in time. An example is a paper letter.
The amount of data means the density of information transmitted in the message.
The green area highlights the most commercially successful media.

What conclusions can be made?

1. There is a huge connection between how much interactivity is in media and its strength (well, at least among successful media). Telephony has changed the world because interactivity is so real. However, the more interactive you become, the less data you transmit. It is impossible to organize online communication in real time, which by the force of digital exposure will be as strong as a movie or some other digital entertainment.
2. The bottom left is rubbish. It’s hard to add commercial value to these media. With advertising here you will not turn around. People are not interested in non-interactive media with low information density. For example, graffiti does not attract a crowd wanting to pay for it.
3. The top right corner is the media with the highest value, but very difficult sales. Not everyone can pay for a very limited media product in the form of personal seminars or personal coaching. But those who need it and who can afford it will do it with great pleasure.

If you looked at this diagram three years ago, you would have invented Twitter. And now, when it is in front of your eyes, what would you invent?