The barrier to learning something new is really quite low.
There are online courses, eBooks, libraries, blogs galore, webinars, videos and meet ups. The barrier to learn from any one of these sources is tiny for most people.
The ability to connect and find sources of learning has dramatically shifted in the last decade or so. When I was at University I had to get the bus in to town to visit the library. Now it’s all available on a smart phone. There are of course challenges around the trust worthiness of these sources.
So if it’s really easy to learn the real question to ask is – do people want to learn?