I'm not sure why so many people are upset about American remakes like it's a new thing. Or remaking/adapting ideas in the first place. Isn't that the whole Disney schtick? Has there been any Disney movie that didn't come from a fairy tale/ legend /children book or something?
And they change things, yes, but sometimes it's good. What would be Beauty and the Beast without the talking furniture? Or Aladdin if it followed the original story? Or Cinderella if the shoe had been fur and the sisters cut off part of their feet to try and fool the Prince by being able to put the shoe on?
If they're not going to release the original movie (when there is one), then it's probably a good thing that they change something. Doing the exact same thing, that's what would frustrate me. Instead of releasing a perfectly good movie, recreating it all? It seems like a waste. A loss of audience for the original movie, and a lot of time and effort for making one that's identical - but with known actors and in English.
As for remakes raping the authors or something, I'm fairly sure that when something is copyrighted, they buy the rights. The US is pretty big on that. That means the original creators are allowed to refuse.
I personally do think it would be better to show movies from around the world more widely. On the other hand, you can do both. You can have, say, the Beauty and the Beast movie with Jean Marais, AND the Disney cartoon. And as long as they're clear that it's a remake or an adaptation, they can make people aware of the original, too.
Hollywood has a bunch of problems, but I don't think any of them are only present in remakes from other countries or caused by them. Lack of originality? Well look at most of the movies being released. Taking existing stories? Hell yes, they take from comics and novels all the time. Sometimes they make the movie of a TV show too. Lots of spending for a crappy result? Do I really need to name examples for that one (hint, lots of special effects that don't always look good and nonsensical plot).
But there are good American movies, of course. Complaining about Hollywood is sometimes a bit easy, like complaining about "American food" as though it was all fast food when there is so much more to it. If you want to find the good stuff, you need to look harder for it, it's sad but that's how it works. I think it's true of remakes too. There might be a lot of crappy ones but you'll find excellent ones as well.