> Can you provide an example of where facebook tried to do what most people would consider good

They gave the social media thing an honest try for a short period of time. And it even came with a lot of fanfare initially as people used it as the "internet's telephone book" to catch up with those they lost touch with.

But once initial pleasantries were exchanged, people soon realized why they lost touch in the first place, and most everyone started to see that continually posting pictures of their cat is a stupid use of time. And so, Facebook and the like recognized that nobody truly wanted social media, gave up on the idea, and quickly pivoted into something else entirely.

Social media is a great idea in some kind of theoretical way — I can see why you bought into the idea — but you can't run a business on great theoretical ideas. You can't even run a distributed public service without profit motive on great theoretical ideas, as demonstrated by Usenet. You have to actually serve what people actually want, which isn't necessarily (perhaps not even often) what is good for them.