As the value of the currency declines, so does the culture. It’s an inevitable law of nature. As inflation skyrocketed in the 1970’s, the values of society went by the board. Standards of art vanished. Literature became overinflated postmodern monstrosities, a mountain of words, which had no meaning, little coherence, little value.
With film one can look at the decline of production values, cheaply masked by computer gimmickry. Fifty years have revealed a slow decline even in this still-potent art.