Is this viable for all authors? Perhaps not, but between the new self-publishing market, Patreon, and pay-by-what’s-read models like KU, there’s more options than the shitty ebook racket that the publishers have created.
An extremely relevant example: Veritasium. He creates well researched and scientific videos on YouTube (at a rate of maybe 3-4 a year), and has almost 5,000 patrons.
Again, can every author survive this way? No, but there are other options; please don’t get hung up on the familiar and call it the only way.
How does anyone get a following? You build it over time.
The argument that piracy doesn't hurt sales is reductive and unhelpful.
Of course it hurts sales in the sense that if you could somehow invent a perfect DRM that is unbreakable, more people would buy things. But it's also true that not all pirates are lost sales. Some people if stopped by DRM just won't consume the content at all.
But more importantly, since piracy can't be stopped, the debate is moot. We have to accept it as widespread and inevitable rather than debate what would happen if we could stop it.
Note that the overwhelming majority of writers -- the mid-list majority -- make relatively little money from their writing, even under this "pay per toll" arrangement and have to subsidise their art by keeping their full-time jobs and writing for a few hours at night to keep the art flowing.