I think the context was lost here - https://news.ycombinator.com/item?id=24724730

They did compare it to all of these

"An analogy: there are open source versions of Dropbox for users that don't trust Dropbox with their files (NextCloud, ownCloud, etc.), however this comes with the friction of having to host your own solution. We are more like Dropbox, where we want to create a solution that is incredibly easy to install, manage, and work with."

NextCloud: self-host OR pay for a managed option (this means someone runs it for you.) ownCloud: self-host OR pay for a managed option (this means someone runs it for you.)

He compared it to Dropbox, Nextcloud, and ownCloud.