To find out Adam Mastroianni analysed the top 20 grossing films in every year since 1977 and coded whether each was part of a “multiplicity” (i.e. a sequel, prequel, franchise, spin-off, reboot etc.).

What he found was surprising:

“Until the year 2000, about 25% of top-grossing movies were prequels, sequels, spinoffs, remakes, reboots, or cinematic ... See more

But this obviously contributed to a feeling of decline in the long-run, because mass culture continued to do the thing it always does: avoid artistic innovation in order to maximize profit. But once poptimism established that only the mainstream "mattered," it set up audiences to judge the health of culture on its least artistic output. If we have ... See more