> This saw an explosion of the space of viable economic activity and with it new classes of jobs and a widespread growth in prosperity.
I don't see any reason why thing must be different this time. Human demands are still infinite, while productivity is still limited (and btw meeting limited productivity with infinite demans is what economic is about). So no increase in productivity will make humans stop wanting more and close opportunities for new markets.
> Modern automation has seen productivity and wages begin to decouple.
Could you provide any sources on this topic? This is a new information for me here.