Earlier quoted context omitted.
My prediction, the next dead unicorn: Dropbox They are similar in that they haven't made anything note worthy in a while and their main product is really just a feature of bigger companies apps and services.
I'm curious: why do you feel Dropbox needs to make something new and noteworthy? Why can't it just stick to its knitting, and continue to offer something that works and people find valuable?
There was another article recently that said that files are old news and people are using Slack. Granted they are shipping files in that, but people have probably moved on to web hosted versions of documents anyway.