Earlier quoted context omitted.
Some credit should be given to the war cry of the current (still pretty much current) regime : let's help the favored classes (I would say the weak, but lots of weak classes find themselves excluded) and everything will get better for everyone ! And then, for about 16 years, since the crisis of 2000 ... it didn't get better for everyone. Real income has been dropping since the 1980s, but it was almost steady until 19…
Pity US has just one party in two colours. The party for rich. Both sides take in a lot of support and allow lobbying.
In Europe the situation is very different. We simply have political parties that are job plans for their administrators. Doing what the rich want means they also get to divide up jobs on corporate boards and that makes all of them ... also parties for the rich.