It's actually a bit annoying because people have been asking about this for years, and whole startups have been founded and acquired to solve this problem. There was this company, Poetica, that created a real-time editing tool. They even went as far as building a WordPress plugin to attract users. The only reason I didn't adopt it was because I had baked Gdocs into our editorial workflow and I wasn't going to switch without being thoroughly convinced. It was lucky we didn't because it didn't take long for Poetica to get acquired by Conde Nast and be discontinued. Heh.