It's one thing to allow people access to their Calendar and contact information in Google's systems via an open protocol. It's another to provide an implementa

It's one thing to allow people access to their Calendar and contact information in Google's systems via an open protocol. It's another to provide an implementation of that protocol on a different system. Why should they? They use their own protocol for this task. They don't provide an XMPP client either. Let others fill that gap, though I understand your frustration that current candidates are insufficient.