This whole notion of people getting paid more is nice but that really isn't what that author was ranting about. They just want more money for themselves. There was no mention of how markets adjust for local cost of living or the inevitable migration towards an integrated world economy. It was just whining.
What artists used to get paid was because those developing markets were completely excluded from consideration. They didn't make any money at all in the developing countries. Now they do and that means they are gaining access to money they never had. It also means values and payscales are adjusting to the reality of artists in those countries having access and the true value of a service balanced against the whole world market.
There's only so much stuff to go around and the 1st world consumes vastly more than it produces. It also has a vast disparit amount of the wealth per capita. This is an example of that wealth being redistributed. It really lays bare it isn't about 'I just want those poor people to make more', it's actually about 'I don't want to share work with people who will charge less'.

