I think they do. We introduced slack at my employer a few months ago and we now have nearly 400 users on there. Traffic to our core mailing lists has dropped to almost nothing, I've replaced several weekly status meetings with low traffic slack channels and most of my co-workers now consider it indispensable. It's also been crucial in helping us establish a new remote office and some other remote workers.
If it's anywhere bear as transformational for other companies, I can see it continuing to grow for a long time.
If it's anywhere bear as transformational for other companies, I can see it continuing to grow for a long time.