Totally anecdotal. Should have been clearer on that. When we are working with a consultant or someone else in a sharing context, Google docs is practically assumed.

Google docs is the only semi-good real time-collaborative spreadsheet and word processor.

It isn't even very good, or have many features, but still seems to be the best.

In my opinion, the area is ripe for disruption, but I suspect nobody wants to spend their life re-reinventing the word processor in javascript.