Philosophy / philosophical treatments, unfortunately, are both ahistorical and also take an *abstract* approach to the psychology of the individual, while the individual him- or herself may vary greatly in individual psychology / mindset, and life-path qualities, or personal history.
Additionally, we can't ignore the *class* interests inherent in commercial / corporate / mass-media products, like movies ('post-apocalyptic'), etc.
Finally, 'post-capitalism' is implicitly a *class*-delineated category -- a potential future timeline after the successful overthrow of the capitalist ruling class, by the world's *working* class, ushering in a *post-capitalist*, collectivist kind of social productivity.
Components of Social Production
So, to spell-it-out explicitly, the corporate ownership of mass-media entertainment products like movies has a *class interest* in not portraying any *optimistic* treatments of future social life and lifestyles because such social optimism necessarily implies a social *collectivism* of some kind, to some degree, in order for various kinds of prerequisite *social production* to get done -- otherwise how could social life get better, if not from improved and increasing social production?
Conversely, the *pessimistic* worldview is the only one we see now in movies that deal with the present or future, because such pessimistic treatments are more *individualizing* of social life -- for whatever of that may still remain in our pandemic era -- which is more conducive of the present-day, bourgeois capitalist-class *status quo* that's based on balkanized, constrained accumulations of *private property*, and the accompanying *solipsistic* / postmodern worldview.
[EDIT: 'Conversely' instead of 'obversely'.]