Feels really there is a lack of true creativity and innovation across the board and they're more being driven by feature FOMO than anything else at this point.
I hate FB, but I hate making such stuff patentable/copyrightable/unreusable/uncopiable even more.
Look at what instagram has become from photosharing app to an everything platform that has a horrible UX.
Nothing, in my opinion. The problem arises when a company is so large that simply implementing a good interface idea completely destroys the value of the original. The best example is Snapchat. Snapchat got big, fast, because its main conceit, while simple, was pretty unique. As soon as Instagram implemented it, Snapchat fell off a cliff, because why use Snapchat when you can just use Instagram?
Facebook is a horrible company which hasn't come up with and original idea in years. It now uses its "sign in with facebook" button to see which apps people are using before copying them completely and leveraging its social graph. At this point its a parasite on the web that stalls innovation.