Yeah, just as much as Teams, Zoom, Skype, Facebook, etc all do. The problem for big companies is you are limited to 15 people in the group no matter what. So when the CEO wants to give a video speech live to 200 people working at home, what do you think happens? The whole company switches from Slack to Teams overnight, because Skype doesn't exist for some users (we have people on Ubuntu laptops), Zoom is a security nightmare the IT department won't allow, and obviously Facebook is right out.
It's Slack's own fault for this super-low limit, and I'm pretty sure tons of other companies suddenly found themselves in the same situation when Covid-induced mass work-from-home started. And have they gone back and fixed this 15 person limit yet? Not that I've heard. So yeah, now Teams is the only choice left.