> Can you point to any other important technology that historically made people in poor countries even poorer? Technological progress generally lifts people from poverty in the long run.

It is very long run. Industrial revolution was disaster for average worker for example. For that matter, all the tech that allowed chattel slavery made whole class of people poorer and significantly worst off.

The accumulation of power and money by smaller group of people means loss of power by poorer people. Those with power then use the power to their own benefit while poorer people dont have that option and become even more poor or worst off.