system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Why do the vast majority of modern Hollywood movie trailers/teasers reveal such a large amount of the plot?

I remember the trailers in the 90's revealing almost no plot to the movies (the Terminator 2 teaser comes to mind) whereas the new Ghostbusters, pretty much all the Marvel movies, etc, seemingly give away pretty much everything except the ending.  The only exception I can think of recently to break this trend was Star Wars.  What gives?
gpt
Psychological/marketing studies have found that people actually enjoy things like movies or books more if they've already had a portion of the story spoiled.

It seems counter intuitive, but it makes sense. Before you consume any other product, from beer to cars, you want to know a fair bit about it before you buy it. Turns out entertainment isn't much different.