Quick point on the state of scientific research and “pay walls”. I am a physics researcher, I’ve published many papers and written a book. It really annoys me how the journals work and how the system is just stacked against both the content creator and content consumer.
When you said “I could access the paper if I googled the title” what you are most likely accessing is a pre-print (arxiv?). Whilst this is good and useful, they cannot really be relied upon, they are the pre-edited, pre-pear reviewed versions.
When I publish research I,
Have to pay to publish
Have to pay extra to publish in color (wtf)
Give up my rights to use the images in other presentations or publications
Give up my ownership of and rights to the material
Earn no revenue from sales
Give the right for Ads to be placed inside my paper
Earn no revenue from Ads
Luckily in the UK its now law that any research supported with government money (99% of physics) has to be published open access. Which is nice but needs to propagate around the world much faster, this also only address one of the above points, although it may be argued to be the most important. Sci-hub.cc is brilliant.