even if the problem was not oversimplified. The problem is less that productivity increased but more that political power is more concentrated.
I get micropayments for some of my content now, using Google's adsense. It's not enough to buy a cup of coffee a day and I've worked at it. Fundamentally, the problem is how society is structured and the balance between the power of labor and capital. We've seen other great revolutions in productivity from the agricultural to the industrial revolutions. When society distributes those gains more equitably, civilization flourishes and standards of living go up.