Compare this to being a developer in Canada and working for a US company. Coworkers in the US make more as a base salary and pay less taxes than Canadians do even though the actual cost of living is not different. The argument there is its not about the value of the work delivered, its the cost of competing in a market. Say your average dev for that position makes 140k USD in the US, and in Canada, the average dev for that position makes 100k CAD (74.5k USD), most will pay that dev a modest amount over 100k CAD to attract the talent and compete in the local market, say 120k CAD, which is just below 90k USD. Is it abuse to pay them less than others who do the same work in the US? Most who do the work in Canada are probably in agreement that it would be nice to make the same amount, because who doesn't want more money, but in reality, its still a good salary in comparison to most other jobs locally.
Its not exploitation if you're paying people higher than their local cost of living and higher than other local jobs. If you're just appalled about people being paid an amount of money that to YOU, based on your cost of living isn't fair because you'd want to make more, then be appalled at capitalism as a whole and how much work is being hired outside of company's originating countries. The production of almost everything globally is outsourced to locales where the cost to compete is lower than in the originating country.
Its not exploitation if you're paying people higher than their local cost of living and higher than other local jobs. If you're just appalled about people being paid an amount of money that to YOU, based on your cost of living isn't fair because you'd want to make more, then be appalled at capitalism as a whole and how much work is being hired outside of company's originating countries. The production of almost everything globally is outsourced to locales where the cost to compete is lower than in the originating country.