Say you are reading a book you really like and want others to read it too. Maybe you just one certain friend to read it. Maybe you want to try to influence millions of people you do not even know. Or somewhere in between. It should be possible to easily buy restricted or unrestricted book distribution rights.
For example, imagine some wealthy guy with an interest in some policy area, someone who already might now be donating to think tanks like, say, the Manhattan Institute (and I happen to know such people in that specific case). They come across a book that delivers some message (could be about health care, banking reform, immigration, etc) they so enthusiastically agree with that they want to see it reach a much wider audience. It ought to be possible to go to a web interface of an online bookstore or publisher and bid for the right to make the next 10,000 copies of the book free to download. Or bid for the right to make the book freely downloadable for the next 3 days or the next month. Or make it free to download only in one geographic area (e.g. where a measure is on a ballot and you want people to read a relevant book).
If any philanthropists would like to “subsidize” the sale of The Path to Tyranny: A History of Free Society’s Descent into Tyranny, let me know and we’ll work something out.