I'm not sure the evidence supports the conclusion.
Two main points you make, IMHO, are:
- Industry people are not reading trade rags because they are not interesting, nor original, even though they are free.
- People WILL read content that IS interesting and original, and will even pay to do so.
So, IF the rags had better content we would expect more interest, yes/no?
On the other hand, the Anti-Intellectualism attitude of the industry is unmistakeable. Although I would not dare call myself an intellectual, I am certainly an strident Anti-Anti-Intellectual. ;)
Some possible reasons for the apathy:
Sucessful Security is a non-event.
The strongest detterent leaves no trace of its effectiveness, except for the absence of attempts.
Perfect Security is Perfectly Boring.