This idea isn't uncommon because it's beyond the Overton window, it's uncommon because it is silly and unworkable. * Total fantasy to think you wouldn't fall afoul of free speech, both legally (in the US) and morally. In fact, the author touts as a benefit that you'd stop populists being able to talk to their audience. This is destroying the village of liberal democracy in order to save it! * Absolutely zero thought…
Is the right to pay others for speech necessary for free speech to exist? If so it is already non-existent. No functioning democracy allows judges or politicians to sell their speech to the highest bidder for example. Why should advertisement be different?
It's relatively easy and sensible to ban very specific forms of paying for influence. But a ban on publishing your opinion in someone else's publication is extremely broad and obviously in violation of free speech. Free speech isn't defined as standing on a corner yelling at people.
I also think it's counterproductive. All influence seeking (both commercial and political) would be forced to move from overt advertising to covert infiltration of our communication.
I want more transparency, not less.