Yep, because middle-income jobs are disappearing - due to automation and scale: https://economics.mit.edu/files/11563 https://economics.mit.edu/files/11563 Plu

Yep, because middle-income jobs are disappearing - due to automation and scale: https://economics.mit.edu/files/11563 https://economics.mit.edu/files/11563 Plus again scale shifts profits away from labor: https://economics.mit.edu/files/12979 https://economics.mit.edu/files/12979