Why haven't increases in productivity lead to increases in wage?

Corporate america thinks greed is good . Meanwhile americans still believe having a free for all society is great  so it will only get worse from now on 

Because they have. Consumer durables, which include microwaves, fridges, and televisions have become cheaper in the past 40 years. The reduction in price occurs at a higher rate than inflation, therefore one working at a minimum wage could own a larger amount of said goods. It might look stagnant on paper, but the comparative cost of most goods means that one is becoming truly richer.

North American economy is based on prices for goods from China and 3rd world countries.

what are you paid for , work or stand around doing nothing , you should try the unemployment line .

Corporate greed and white provledge.

Corporate America is ridiculously greedy, and they buy the politicians you vote for to make sure the only thing extra they have to pay you is no damned mind.

Rich bosses took it all to increase THEIR already famously disproportionate income.

We were actually seeing that in the Trump years before COVID hit.

Lower-income workers were actually receiving larger raises than their bosses under President Trump's economic and tax policies.

See the links.

Republicans are ripping off people.

Because taxes are increasing