Is outsourcing good for the recipient countries?

[Nikia]

I have seen people argue that although it is bad for Americans that their jobs are outsourced that the people in place where the new plant is built benefit. I have heard that this isn't usually true and that most American companies pay their foreign workers at our below the average wage for the area. This doesn't sound too good.
This raises another question. The corporation is saving a lot of money by not having to pay wages that American demand. Why couldn't they pay their workers better than average? My dad works for a coporation with a plant paying poorly in Mexico where they have high turnover. Wouldn't American companies want to pay well (compared to the average wages) to attract and retain the best workers and help the employees afford to buy their products? They could also get locals and the world to like them by causing real economic development.