Broadly speaking, cheap e-books from non-stellar academics are an incredible amount of data leaked for free: top peer-reviewed journals are not cheap at all and relevant conferences proceedings are often run on a pay-for-view scheme. The non-stellar academic from Windy Hill University, Nowhere, will sell a good summary of his/her field and an up to date literature review for less than $20. Bargain.
We are made to buy extremely expensive books and waste time reading crap books all the time.
The best books in my field were written randomly over the last 300 years.
I think ALL information should be free in the digital age. its the maximum rate of efficiency.
There are 6 billion people in the world without a proper high class uni education like myself.
How is it that we are okay supplying free weapons to poor people but go to great deal to restrict the supply of information ?