Then you have tech. In tech, US workers are again paid more than in other OECD countries. But growth in tech is just insane and it makes a huge percentage of the GDP growth. And there aren't a whole lot of tech workers as a percentage of the total workforce. So although tech workers are paid a whole lot more than in other OECD countries, they aren't capturing as much of the growth of the tech industry.
So really this is an argument that tech workers in the US should be paid even more, and I don't think that sells so well as the populist argument that the authors intended to make.
And to me saying, that an autoworker that works for Ford, is not capturing the GDP growth that is generated by Google, is nonsensical.