I'm simply stating that the cost of a full IP stack is exceptionally minimal, and getting smaller. That's kind of the reason why we're ending up with the Internet of Shit / Internet of Threats.

Of the whole list of things from Gernsback's illustration, it's probably the most sensible.

The other lesson -- to not get fucking bogged down in minutia and definitions -- is to realise that his "radio world" really boils down to a few distinct elements:

1. A communications medium. Gernsback uses radio. We'd probably generally use Internet, though that can run over radio links (packet radio is a thing).

2. A controlled system.

3. Some sort of control mechanism itself.

4. Feedback and response (it's not much good to send signals to an RC plane or boat if you can't monitor its location and surroundings).

5. Other facilities. The "radio phone" for example has that element that's central to most messaging and social systems: a directory. Databases, billing systems, etc.

Thing is, we're living in Gernsback's world, we just don't consider it to be a "radio" world, and to a large part it's not, though radio can and does act as part of the media linkage. The real business opportunities though seem to lie elsewhere. Mostly in advertising. Or pyramid building.