Slack could be described as a replacement for email, but in a behavioral sense. DuckDuckGo was the attempt at a new search engine, but it hasn't reeeally worked

Slack could be described as a replacement for email, but in a behavioral sense. DuckDuckGo was the attempt at a new search engine, but it hasn't reeeally worked. Khan Academy is replacing universities. Even universities are starting to replace themselves by offering many of their courses online, and streaming many of their lectures. Netflix is obviously the winner under 'Internet Drama', and it's clear that a lot has changed in the last 5 years. No idea about the next Steve Jobs. The Moore's Law thing: Heroku, Kubernetes, and many other startups that try to simplify the cloud. So you're right, not many "startups" in here, with the exception of Slack and DDG. I think it's more common for an existing and mature company to take over these spaces when the time is right.