As other commenter said, prob has more to do with growth of computing in the developing world. Very little labor now that can't be done by someone living in a country where breakfast costs less than 25 cents. I mean, theoretically at least. Most of those people probably aren't learning from professors who spend their whole day teaching and doing research, and that kind of activity can only be supported by a relatively wealthy society. But, the internet has also democratized a lot of that activity. Well, its complicated either way.