Moreover, there is a tipping point, beyond which the ad blends too well and becomes plain deception. This is even more of a problem for journalistic publications. See also: native advertising.

Indeed. In print, you had dedicated pages to advertisement. Not optimal, but much easier to ignore. Nowadays, you never know if an “article” is simply a marketing agenda.

Yes because the signs people put around the "native ads" literally stating that it's an "ad" or "sponsored content" are easily ignorable. Get real. People pay for a newspaper with ads in it. You still have to sift through it. Ignore it? You literally have to turn the page or spend 5 minutes pulling the ads out of the newspaper if you don't want them and in some cases there isn't a way to escape the ad with print because part of the article is there with the ad. Ad block won't save you then.

That's no different from paying for a real newspaper subscription though.

But I guess you could say that you are paying for delivery instead.