One big factor is simply the rise of CGI, it made special effects too easy, suddenly anything a filmmaker can imagine, they can show, but creativity is born from restrictions, being able to just do anything ironically made it more boring because now there's less focus on story and character, there's less of a need to actually make a good movie when you can slap endless CG spectacle on everything, the Michael Bay Transformers movies are perfect examples of this, but so is James Cameron's Avatar, Cameron didn't have to think the story and character through too much because he able to build this entire alien world from scratch, the polar opposite of The Terminator where Cameron had to be very innovative and creative to work within the confines of a much smaller budget and consequently The Terminator is a much better movie.
The second factor is just simply a good old fashioned lack of creativity, with a movie like The Predator, Hollywood wants it to be a more typical sci fi franchise, the trouble is Predator isn't that, it's a movie with a very specific premise, "what if an alien hunter hunted humans like prey?" and the first movie pretty much did everything you could really do with that premise, 2 did a little more but then you're pretty much done, it becomes "been there done that" which is exactly why I thought Predators was so boring.
The availability and cheap nature of new CGI effects, that allow for spectacle to distract from story and characters, is something that I seriously underestimated but it all now falls into place.
The big movies by Cameron, Emmerich and Bay were always praised for their special effects but the plots were always really boring old and generic things that one has "seen a hundred times before", literally.
To this day I refuse to waste my time on 2012 and Avatar, when every word of praise I ever heard about those movies was about how great the effects looked. If I want to see great effects, I can just watch a techdemo and 30 second clips, I don't need to waste my time with generic Emmerich characters, destruction porn or Smurfs-meets-dances-with-wolves.
Another aspect that's directly linked to the terrible, terrible sequels to established IPs that needs to be mentioned:
The economic crash of 2008.
Production companies became really averse to risk, so they didn't want to make something new (that would be marketed in a way to introduce and intrigue viewers), they wanted stuff to be marketable on established reputation, hence a multitude of bad sequels, remakes, reboots and re-imaginings were made. The market never truly healed from that and it's no surprise that the biggest brand in cinema history is Marvel: it uses established lore, established characters, established plots, throws them in a mixer and delivers pretty solid popcorn cinema. And it did so, right around the time when being a nerd became fashionable, so going to a superhero comicbook movie wasn't frowned upon the same way it was a decade earlier.
Now here we are, with production companies taking away all the wrong lessons for what to do in the future. Namely this silly concept of an expanded universe with a million tie-ins. Sure, it's great for cross marketing products, but they should really focus on making a good movie (a good product) first and then worry about marketing other products.
Much like videogames that do their best to look great in screenshots and fail to really deliver on anything else (you can't print a screenshot of a good plot), movies want to look good for the trailers and be marketable on a big IP name.
Add to that the nepotism and political inbreeding with a pinch of cancel culture and fart-sniffing and you get a recipe for desaster.
Thankfully, I can still just go to the store, buy the iconic movies of the past and enjoy them at my leisure and I'd rather watch Back to the Future a hundredth time or rewatch an entire re-run of Schwarzeneggers iconic movies before I have to spend even a single fucking cent on thet crap Hollywood wants me to buy.
It becomes especially annoying when Hollywood expects me to pay for their political indoctrination, that just so happens to rape one of my favorite action movies of all time.
Dear Hollywood elites:
Call me a misogynist nazi for the millionth time for not watching Ghostbusters 2016. I bet it will make me watch your self-indulgent, hypocritical, badly made crap
eventually.
It was a decent movie, but like Dawn of Fate it would have benefitted from not killing part of the main cast in the first 5 minutes and rendering major parts of the previous films (Ripley saving Newt) utterly pointless.
Absolutely. Alien 3 commits the same cardinal sin that the SW Sequel trilogy commits: It is entirely disjointed from the old movies and makes them completely pointless. Granted, the Shitsquels took a dump on absolutely every aspect of an entire trilogy, whereas Alien 3 merely invalidates all tension about saving Newt and Higgs and failed to deliver a good follow-up on those movies, but still. The general issue is the same.
Alien 3 throws the entire ending of Aliens under the bus (and pretty much the majority of that movie while it's at it), feels like someone just took a script entirely unrelated from the Alien IP, scribbled down a few notes about Newt and Higgs dying, changing some names and then using it for an Alien 3.
And all this could be forgiven, if it was a better movie, but it isn't in the opinions of the majority of Alien fans. Sadly, it could be a decent movie, if it was its own thing, I think. But when you stumble into a movie that just invalidates the previous installment, that seriously lowers any enjoyment you could get from that movie.
Alien 3 wasn't well received at any time for this reason. You can still enjoy it, if you don't care about how it ties in with Aliens or if you can convince yourself that it doesn't invalidate Aliens by coming up with a flimsy argument about PTSD, but that's a subjective thing (granted, much like not liking the movie is a subjective thing, too, but it's clearly the consensus amongst fans).
I, for one, dislike Alien 3 for what it does to Aliens and it's simply not a good enough movie to overlook that major shortcoming.