FWIW, I work for a company (Salesforce) that offers a collaborative writing tool, Quip. We acquired them a few years ago, and their CEO is now our COO. So, as a company we officially
like love Quip, and it’s the preferred, recommended, semi-demanded tool for internally shared documents. (Of which there are, literally, millions.)
And I use Google Docs instead, whenever it’s me creating the document. 100% of the time.
I’m a technical writer (writing documentation for developers), and collaborative writing, editing, and technical reviews is a given. That’s the job.
And IMHO, nothing comes close to Google Docs, for the “one primary author, multiple editors and reviewers” use case. It’s just about perfect.
Sure, there are quirks, and it’s not a native app. But as Adam described so well, there are benefits you just can’t get with a native app, when the collaboration is the focus. I think that’s true whether you’re distributed around the world, or just across cubicles (should that day ever return).
There’s plenty of things I don’t/won’t use Google Docs for. I kinda like Pages, when I want something more layout/design-intensive.
But for collaborating with others, no hesitation, or desire to even try anything else at this point. Google Docs is just that good already.