I have tried to sell my organisation on a shared Google Chat doc for 90s style realtime ICQ chat in times like these, but there has been little uptake.
G Suite actually has an entire Slack clone, chat.google.com. I've been on G Suite (now annoyingly renamed to Google Workspace) for years and actually just recently found it existed from another comment on HN.
Yeah, this is what we actually use as a fallback, and I did push for this as an full time alternative given we'd get it free, but people dislike it for all sorts of frivolous reasons.
