I think we’re saying the same thing - companies are concerned about the data and security risk. I still don’t think they’re going to be able to universally ban it, and I think doing so without an alternative in place will drive them to even less secure third party chat apps that still probably use the same API behind the scenes.

And I removed the last sentence from my comment, which didn’t mention a service, only that I was interested in chatting with folks in similar positions, precisely because this is a new space and many companies are scrambling to address it.