I think Gutenberg was simply in the right place and the right time. His bible was still Catholic but he was living in a part of the world where Protestantism wo

I think Gutenberg was simply in the right place and the right time. His bible was still Catholic but he was living in a part of the world where Protestantism would soon kick off; powered by his re-discovered printing press and movable type. His part of the world was a patch work of city states, small provinces, and kingdoms. Germany as a country simply did not exist at the time. Many of those states were fiercely independent and interdependent (trade). And some of them were prospering and featured a growing middle class, trade, and relative freedom. So, he was in a place that was relatively literate (for the time) and entrepreneurial. The combination of people capable and free to express themselves and a new technology to do that at scale created a perfect storm of information and soon revolution. Aside from the complexities of their written language and its many characters; China and Korea were basically very old empires at the time they invented movable type. Their societies were managed in a very hierarchical way. They had the means to spread information but only used it to spread officially sanctioned information. So, it did not really catch on to the same level that Gutenberg's press revolutionized (quite literally) Europe.