Your not looming at anything after the first order effects. The idea of work os that people participate in the economy, what does a post work economy look like? How do people have the cashflows necessary to participate in things like housing and food and stuff when their way of contributing to the economy was automated away?

I don't believe there will be a "post work" economy. Some people will turn to farming, others will turn to crime and mischief (hunter gatherers).

I expected when we actually get to that point, we'll have an even worse version of the K-shaped economy.