Makes me think there must be something up with their security, I can't think of any other reason why they wouldn't give private paid plans for businesses.

There are a LOT of people who would jump over from slack.

For a very small remote organization, Discord would definitely be my go-to choice to start with, but privacy concerns and the fact that it stops working well with more people involved would eventually be a blocker.

It was also really bad for privacy. You have to opt out of “automatically share window titles with everyone”, and Do-Not-Disturb still pops up notifications when people ignore the badge.