To get a clearer picture we can look at the effect that technological innovation has on increased efficiency per worker, or how the massive population growth in other nations suppresses wages for some industries, along with the destruction of tariffs and taxes from trade and the opening up of some labor markets over the past decades.

Way too many factors pushing wages down and too much money printed going into the pockets of those who already own all the assets, so it's to be expected that the working class who need to buy into those assets is screwed.