Comment by antonyh

I don't think the world needs another protocol, we need to leverage the ones we have. This space (text-based real-time messaging with media attachments) is feature complete, there's nothing left to add. The remaining value-adds are exactly that; optional extensions for productivities suites and integrating SaaS tools. Pricing and Privacy are another two concerns, and personally for the latter I'd like human chat to be as far away from AI as possible.

I use Google Chat, only because my clients use it. Network effects matter. Personally I think it's terrible, but I wasn't a fan of Slack either but I'm not entirely sure why as it's pretty much just sending text. Maybe the opportunity to innovate in this space is UI/UX, and performance/reliability (Signal has been slow/flaky recently for us).