Primarily it is one thing, a lack of economic mobility. Things that factor into that are stagnation of wages, increasing wealth inequality, and the fact that po

Primarily it is one thing, a lack of economic mobility. Things that factor into that are stagnation of wages, increasing wealth inequality, and the fact that policy has been shown to favor the wealthy. The other commenter also touches on key points, rising rent cost as a % of wage, lack of ownership compared to past generations, lack of interest bearing accounts, etc. Trick up is real, trickle down is the myth.