It's for sure partialy due to outsourcing, but I wouldn't neccessarily call it cheap. An experienced developer in Poland costs around 50k euros per year, which

It's for sure partialy due to outsourcing, but I wouldn't neccessarily call it cheap. An experienced developer in Poland costs around 50k euros per year, which I guess is a bit less than in France, but not that much. However, if moving work to Eastern Europe were not an option, the companies would have no choice but to pay more in Western Europe (or try outsourcing software engineering to India, but that seldomly works).