1) They ed off fans more than the prequels? Than Return of the Jedi and Ewoks? Even ESB ed people off back when it was released because it ended on a cliffhanger. ing off Star Wars fans is the easiest thing in the world. Want to know how to do it? Do anything. Or do nothing. Either way, they'll be ed. The original Star Wars movies still exist. I came to the realization during the prequels that I liked the original movies, the new ones were not for me, and maybe I had just moved beyond my fandom for the Star Wars universe. The sequels were... fine... -ish. It would be nice if people could just realize when something is no longer for them and move on rather than endlessly rage at the latest entity who "ruined their childhood." We just aren't always going to love everything we've ever loved forever, it's why divorce exists. They could get a divorce from Star Wars and not even have to worry about hiring a lawyer or losing half their stuff! And there are very few fans that have thrown money at Star Wars for 45 years. Most either stopped long ago, or started much more recently than 1977.
2) Yeah, it's not Star Wars. But what is "Star Wars?" I don't think George Lucas knows what "Star Wars" is; at least he has a very different understanding of it than I ever did. Ask 5 people who were alive to watch the originals in the theaters, 5 people who first saw the prequels and 5 people who first saw the sequels and you'll get 25 answers. For me, Star Wars is Han, Chewie, Luke, Leia, (Alec Guinness) Obi Wan, Yoda, C-3PO, R2-D2 and Darth Vader. If they added those characters (yeah, Chewie is in it), people would complain they ruined those characters. But in the end, the experience isn't really about Star Wars per se. It's an interactive experience set on a space ship taking place in the same universe as Star Wars, featuring cameos from characters in the Disney Star Wars movies. It's really more for people who can enjoy that type of experience more than the specific IP. And that's something that was not communicated in the advertising, or maybe Disney didn't realize it themselves. Did people think they were going to be fighting with real light sabers? That Harrison Ford from 40 years ago was going to show up?
If Disney screwed up, it was in thinking they were going to be able to please any large percentage of Star Wars "fans" (who, from my experience with the internet, are defined as people who hate anything Star Wars does after they turned like 12.) Star Wars "fans," in general, are terrible because they all think they're personal experience with it is the definitive version of it. It's an all-ages science-fantasy adventure story based on 30s and 40s serials! If people could just realize when something that is owned by a huge corporation stops giving them joy they can just walk away. They can find something new, that speaks to them now. And just because they don't enjoy something doesn't mean nobody enjoys it. Maybe they should try some Star Trek?
Honestly, Star Wars has become a politico-cultural cudgel wielded by emotionally stunted, terminally online people to bludgeon others who don't agree with their worldview because they feel everything they always assumed was their due is slipping away and rather than adapt to the world the way it is would rather vainly fight and claw their way back to an imaginary world they misremember or heard about in stories but never actually existed.
Whew, that's not what I planned to write.
3) Yes, it costs too much.
What they made is an interactive experience that is essentially geared towards theater kids and improv performers with a Star Wars label stuck to it. They thought putting a Star Wars sheen on something that innately appeals to a small percent of the population would make it something everyone would want to do, not realizing, after producing at least 1 or maybe 2 movies (I don't know when planning started and when they hit the "no turning back now" point) that were highly polarizing, that there was no way it was going to work. Or maybe they just thought it was worth the risk. Or maybe they had a CEO that couldn't admit to a mistake.