By focusing on AI, you missed the point.
Slack is monopolizing data access and not giving companies access to their own data.
Companies want to hook up their chat BI to LLMs so it can be instantly and richly queried. Slack search sucks, and an LLM could increase employee efficiency by an order of magnitude. It could also make a lot of requests self serve rather than having employees interrupting each other constantly.
Slack is prohibiting companies from surfacing their own data to AI. They're perhaps worried this will erode their leverage.
That's the entire point here.
Companies should have the option to leverage their chat data for AI rather than having no option at all.
Slack bad.