Of course there is a lot of other stuff going on, but I do think that high fidelity really makes stuff hard. That combined with much more pressure to cut corners in post production (on top of more stuff needing to actually happen in post!) just makes it all fall apart.
Part of the problem when every story has to be the biggest thing ever, and a problem that other industries have hit (games in the PS3/PS4 generation).
Might be an issue that there isn’t a single person pushing the world, aesthetic, vibe and vision making the actors immersed in their roles. In the end getting all dressed up and standing against a green screen probably feels a bit silly without someone selling it to you.
I consider myself a fantasy and sci-fi nerd, binge read the Lord of The Rings, starting with the Hobbit, between Christmas Eve and when the first movie came out. Read the Simarilion. Loved the LotR triology. Like the Hobbit, ehich already strechted the source material a lot, but in a way that could be justified as a lead up to LotR. I did not manage to dare whatching the Amazon series, and propably never will. Thr LotR films, The Expense and the Star Wars series and first two triologies are the last movie ftanchises I still get immersion and suspenson of disbelieve from, I'm not taking any risks eith LotR.
That potentially gives you _decades_ to binge-read the books... how many depends on what do you consider "the first movie". :-)
The perfect example is Lord of the Rings vs The Rings of Power. I had no problems believing that Aragorn really lived in Middle Earth. But every single actor in Rings of Power feels like…an actor - just someone playing a part.
Maybe its the overuse of bad CGI, but so few of the worlds feel “lived in”.