Eben Moglen observed that at one time people were building giant stone pyramids, then the social and technological conditions changed, and people stopped making new ones. That's OK, it's not a sad thing that there are no new pyramids, we still have the old ones and people still find them awesome.
And he says maybe big-budget movies are like that too, something that culture will do for a while and then move on to something different when the conditions change.
Even within the medium there was a whole generation of beloved silent-film stars that didn't make the transition to talkies. Every era has a beginning and an end.
I think within the next 20 years we will see the rise of AI generated movies custom fit for your pleasure that will contain information to educate you, images to astound you, a story that will pluck at your heart strings and that you will be able to personally influence by your words and choices and reactions.
They'll end up being more like video games than traditional movies, and no two playthroughs will be exactly the same, and eventually you will be able to stay in the movie world and advance the story for days or weeks at a time.
That era is ending, and other things are replacing them, mostly based on computers and internet.
If you love movies this is sad, but movies once replaced other beloved things.
The world spins on and nothing is forever. Enjoy the ride!