I keep hearing this but it makes no sense to me. If people need to collaborate, what exactly is stopping them from doing it over video? On my team we collaborate all the time remotely.
This isn't to say that I disbelieve your experience, but it still baffles me there are remote teams out there that fail to collaborate at a sufficient level with tools that already exist. I hope Sidekick succeeds to a level that doesn't one day turn my home office into a remote version of Office Space.