> I think you're overstating the importance of a chat based application. It's not mission critical to operate a software business or any business for that matter so why is this so "dangerous"?

I feel like the truth is somewhere in the middle here. In an increasingly remote world and with the many ways slack integrates into businesses I think it is incredibly important to some businesses and maybe even mission critical.

But I totally agree with your second point that just because chat is important doesn't make running your own IRC instance a good decision or resource investment.