I hate to bang on the same old, same old "the internet is a mob!" drum, but there's a real sense that people are slowly starting to figure it out. I wonder if that's just me or if it is really hapening, and if it's really happening, what will the next evolution be?
All roads lead back to Erlang, it seems. 35 years old, and people are still writing kick-ass scalable systems with it. Compare, say, with Ruby. Or anything on Kubernetes. You'd still be on reddit trying to find out why it isn't working at all, much less scaling. (Apologies for the kubernetes hate. It seems to be a useful example of the kind of over-engineering we all love to do and consume)