This is not true for most people where I live. I live in a third world country. Most workers are just trying to survive. You know that the basis of production and where you find the most labor intensive industries is not in Europe or USA. These industries, the mines where metal is extracted, farms where lot of the food in produced, are all in third world countries. Why Siemens move their factories to third world countries instead of their own country in Germany? Because labour is cheap. Ask any worker that work in these places if he work by personal interest or ethics. They are just trying to survive. They have families and all possible jobs pays little and requires a lot of effort.

Perhaps you see this as an oversimplification because you are looking too near home in a biased position. The number of countries considered "rich" and "developed" is a minority. Capitalism is a global system.