I wonder how many accounts the chinese state maintains on hackernews to upvote/downvote post and comments. It's an easy way to influence the public opinion and hard to expose.
I think many (personal) blogs were killed by social media. You don't blog about your last weekend anymore, you just post some pictures on instagram or in your whatsapp groups.
Samsung, Sony, Xiaomi, LG will demand this feature if they sell less phones because people switch to apple. Or they will implement it by themself and gain an edge about competitors who don't have it.
You can't compare this. There are much less bad actors in mobile traffic that constantly try to steal your keys, try to suck gas from your gas tank, hide in your trunk or trick you into insurance fraud...
And what they can't copy, the will buy with their monopoly money: Yahoo bought Tumblr, Flickr. Google bought Android, Youtube. Apple bought beats, siri. And all do a lot of acqui-hiring which kills competition in early stage.
Here are the 10 most impressive ones that have generated millions in revenue with 0 employees"