> almost every film and TV series, as well as a good many plays and novels, have exactly the same plot?

This is what makes Pulp Fiction[1] such a masterpiece. Three interwoven story lines chopped up and served out of order make for a wild ride.

Restating TFA's question, then: why are we not seeing more art of Pulp Fiction caliber? Instead, the bulk of what is on offer seems a regression to the franchise mean.

But is it worse than that? Has technology begotten an epidemic of ADD, where few have the attention span to re-compile Pulp Fiction in their heads, much less, sit through a 90min flick?

[1] https://en.wikipedia.org/wiki/Pulp_Fiction