Do you have an idea of the distribution of cooking skills in the world / western world? How many people need to develop basic skills?
These countries (USA, Canada, UK, Aus, NZ) have similar food cultures, a high reliance on processed foods (especially US), and relatively higher cost of labor and food vs. the rest of the world, so have a higher demand for learning to cook. The best way to see the trend and these countries is on Google Trends:
https://trends.google.com/trends/explore?date=all&q=how%20to...
Fun game: try putting something (or someone) popular on the right side of that graph and see if you can find a higher trendline
It was fun, actually
Learning to cook and searches for poop seem highly correlated