"Like a form in a web site, that's highly interactive and can be accessed collaboratively by many people at once."
I can't see what problem that actually solves, unless the writers/contributors have control over when others can write/contribute to the wave. I mean, how often have you sat down to write an email, or a document, or make a PPT presentation and said to yourself "You know, it would be really cool if my colleagues could see me putting this together and could then jump in at any time and edit or discuss what I'm writing."
To me, that would be immensely annoying to the point of utter lunacy.
"In this paper, I shall show how a perpetual motion machine can be assembled from simple household items and ..."
"BZZT! Dude! You're full of shit!"
"Look, let me finish this please - you've not read the...."
"Dave - what? Are you seriously going to try to convince me that you can defy the laws of physics?"
"Oh FFS Frank, if I wanted to put commas all over the place, I would OK! Just stop editing my damn paper before I'm finished with it OK!!!!! Huh?? What has that video got anything to do with this??!!" ... and so on.