If you look at social media through the normal lens, the 'user profile' glasses, it all kind of looks the same. One of the things writers do is swap out the lenses. So what are the alternatives?
I thought maybe a chicken farm, or maybe an egg farm. I have no idea if or how much difference might be between those, but to use some marketing terms, I put Google in the 'free range' category, while Facebook is more like 'caged'. I'm not sure about Twitter... game hens maybe.
But now I think these social media sites are about conversation. Maybe you want a debate, with rules or such, or maybe you want to hang with friends and be in the now. And I think that's why users get upset when the rules of conversation change.
The whole point of social media is participation, and there are rules. You have 'like' or 'follow' before anything happens. You converse by those rules, and then they change, just a little bit, and it's no longer the same conversation. That can be very annoying.