I wonder what the economic ramifications of this will be. While the article mentions free volunteer sources, I expect that in short order we're going to see a large number of these books available from commercial vendors for cheap or free. In fact, I fully expect there to be a cottage industry of publishers trawling the new public domain for hidden gems, and churning them out as cheap paperbacks for physical stores. And e-book stores will be giving away public-domain books as incentives to sign up for their services.
I wonder if we'll start seeing an explosion of film or TV series based on newly-free IP.
There's already way more ideas than funds for television, in part because there's not really that many people that can reliably take an idea and turn it into good entertainment.
I am fully aware that demand from on demand services has created somewhat of a golden age of series television. It's still limited by funding, not ideas.
I wonder if we'll start seeing an explosion of film or TV series based on newly-free IP.