[Gravityloss]

It could require a lot more effort as there's no glamorous press releases to just copy paste - you'd have to contact people who might not be so willing to advertise their failures, and there might be rules preventing them from saying much.

But oh how it would be interesting! Just aggregate some blogs with a five year delay so there should have been ample time to have developed something.

Or just even write a few longer investigative pieces on why technology X failed to materialize despite immense promises.