> Bork’s consumer-based theory had many flaws. One of the most obvious was that it did not anticipate the rise of online companies such as Facebook and Google, which offer their products to consumers for free.

Not entirely true [1]. For one thing there were close and similar models at that time. For example yellow pages were given out for free and advertising was sold. Second there were (and still are) many local newspapers that make money solely off of advertising. And along those lines I would argue that even paid newspapers are close. Why? They give a great deal of value for the small amount that is paid in exchange for viewing advertising. Ditto for tv broadcasts the content is free (as long as you have a tv set) and they make money off advertising.

[1] And I wouldn't call something that in no way could have anticipated the future in the way it rolled out 'a flaw' anyway.