> So maybe non-invasive advertising could work quite well?
You'll never get that without government intervention. At a bare minimum, ignoring targeting, tracking to enable conversion analysis--which necessarily requires deanonymizing users and connecting advertising engagements with purchases--is nirvana for advertisers and they'll never want to give that up without a fight.
And that's ignoring the fact that users install ad blockers because ads are also "offensive".
> But to my mind, models that literally block those who can't pay, or are disadvantaged in some other way (not tech-savvy enough) are the worst models of all.
Why? Until the internet came along, for folks not privileged enough to be able to pay for content, there was the library, and that remains an option today (many libraries offer free access to both physical and digital newspapers, among other things).
Given that, unless the content is sponsored by the government in some way (e.g. BBC, CBC, etc), what gives individuals the right to benefit from others' work for free?