[derefr]

> information quickly ages out

Only on free plans. Corporations that have customers with SLAs that they're doing incident-response for probably aren't using Slack's free plan.

But even if they are, the data's also not actually purged from their systems. It's still in the Slack-workspace archive export, if/when you do one of those. They just hide it from you. Paying for a plan un-hides it.