> The economic surplus from that increase in productivity accrued to everyone in society, not just the wealthy.

Sure, a poor man with two dollars is richer than a poor man with one dollar.

And yet the man handing out the dollars had 100$ in surplus when he was handing out 1s and now that he's handing out 2's he's got 1,000,000,000.

Look at the wealth disparity. Even if quality of life has increased, it's not wrong for the people delivering that increased quality of life (workers) to also demand a requisite slice of the pie.

In fact, I see no reason why the pie should be shared with wealthy non workers at all. Were they necessary for the increased quality of life?

On top of that, it's a global economy. Expand beyond the USA and include in your analysis how life has changed in imperialized nations that now function as cheap labor sources for our factories that pollute the local environment while exploiting workers for absurdly low wages and bad working conditions.