Because they understand the exploitation involved in a giant corporation controlling all aspects of life for profit and the shallowness of detached and alienated entertainment?
In places it's not implemented yet it's because of mostly the work of lobbiests and land owners engagement in politics.
Things and policies in a democracy don't just catch on, they must be fought over. Thankfully the fight is mostly by political activisn and nothing worse
Seems to be a wrapper around this: https://github.com/dearhive/dearflip-js-flipbook