What is the evidence of the fact that young people have become very mercantile?

Because the ideology of consumption began to prevail in the world, from which the cult of money flows. Money will be reborn to the highest rank, crossing out everything that came before and replacing it all with a race for material wealth. Including the crossing out of moral values, since mercantilism is a path to selfishness, and therefore to deception and cunning towards others for its own benefit.