In some places you can get badly beaten up, robbed and whatever else for having only a bit more than others.
I am not saying they are entirely right with what they do, but there are legitimate reasons for that kind of approach.
I'm not saying Samasource does not profit from this situation, they clearly do, but Silicon Valley taught me that money spent paying developers through the nose ends up mainly in the landlord's pocket.
This is pure BS. What "power structures" are you talking about? Well paid jobs bring money which is spent in the local economy. I doubt the nearby shop owner will be angry because now you can buy food instead to beg for it.
The Uber/Airbnb model is a totally different issue because they compete with the local market and enjoy unfair advantages which is not the case here.
In the worst case scenario security can be bought too. Money gives you power, especially in poor communities.