The article lists Google Docs, which doesn't really seem equivalent, and OneNote. I'm using OneNote right now to organize planning for a media/writing project, and the experience leaves a lot to be desired. The writing interface in particular is clunky, in the web client and on Android -- on my phone, I have to pop open a menu and then a drawer just to switch bold text on or off. And the Office365/OneDrive setup just isn't well integrated overall -- navigating OneDrive is confusing, and you can't, for example, insert a picture stored in OneDrive into a note.
Google Keep doesn't fit my needs, as it's missing support for any sort of real organization. It seems more geared toward quick digital post-its and todo lists.
Is Dropbox's Notes product any good? That seems to be in closed beta still...