[JesperRavn]

Technology is the main driver of growth in GDP per capita. Technology is what makes wealthy countries wealthy in the first place, and gives them enough surplus that they can afford to help poorer countries (whose problems may not be lack of access to technology per se, but other issues specific to their societies, such as unstable government, lack of education, etc.)

By making the developed world richer, technology helps everyone.

[dannypgh]

GDP per capita can easily be increased without raising the median standard of living, or ending poverty. Increasing total wealth doesn't guarantee anything when the maldistribution of wealth is the underlying problem.

[JesperRavn]

No guarantees, but in general it does. Look at, for example, graphs of GDP vs life expectancy.