If it wasn’t, you would have expected those rates to decline after the introduction of media informing people.
Much simpler than that, you just ban all targeted ads full stop end of story. The ad-funded internet existed in the 90s before ad targeting was a thing.
You went on a car forum, you'd get ads about car parts. You went on a PC forum, you'd get ads about PC parts. Pretty simple stuff that didn't need to know your age, gender, political affiliation, ovulation status, etc so it's not like the web will go bust without ad targeting.
Targeted ads are exploitative and manipulative, and a crime against humanity, or at least on society.
3 years after the nation of Fiji received its first television broadcasts in 1995, dieting and disordered eating went from unheard of to double digit percentages among teenage girls.
https://www.nytimes.com/1999/05/20/world/study-finds-tv-alte...
> Before 1995, Dr. Becker said, there was little talk of dieting in Fiji. ''The idea of calories was very foreign to them.'' But in the 1998 survey, 69 percent said that at some time they had been on a diet. In fact, preliminary data suggest more teen-age girls in Fiji diet than their American counterparts.
The moment you have to build rail-like things you lose most of the cost advantages.
Circles would have had a couple of advantages. First, I believe they would have been easier to make. From what I've read rectangles have more stress at the corners. Rounding the corners reduces that but it is still more than circles have. With circles they could have more easily made bigger CRTs.
Second, there is no aspect ratio thus avoiding the whole problem of picking an aspect ratio.
Electronically the signals to the XY deflectors to scan a spiral out from the center (or in from the edge if you prefer) on a circle are as easy to make as the signals to to scan in horizontal lines on a rectangle.
As far as I can tell that would have been fine up until we got computers and wanted to use TV CRTs as computer displays. I can't imagine how to build a bitmapped interface for such a CRT that would not be a complete nightmare to deal with.
I've seen "China is collapsing" videos for the past 10 years. They seem to be going rather well over there so far. They're making the best EVs while American and German cat veterans struggle with electrification. Go figure.