Why not code for others? Or create services people like?
If i would live in a country that is not Switzerland i could easily live from one Website i have and the Adsense income on there. The website is simple and needs barely maintaince, but i managed to make something, that already exists in several variations, so simple and that people started to use it.
Well the cost of living isn't the same in many countries.
I agree at that point, and the same product(website) can be sold many time lower in other countries.
Personally i wish to earn from adsense one day, but i just need to start something and then leave me do the job.