Most answers didn't seem to really answer the question so I'll try. If we fast forward long enough after the true demise of reddit and or HN, then I think it's

Most answers didn't seem to really answer the question so I'll try. If we fast forward long enough after the true demise of reddit and or HN, then I think it's pretty obvious that the outcome is that most people have moved on to a platform that does forum posting in a new and fresh way that solves some big problems users felt existed (a good example of this is the demise of Skype despite them being a top notch product but severely behind the potential).