Maybe, just maybe if Slack was actually a decent piece of software it would do better.
But it isn't, probably never will be, and so won't.
Slack is mediocre at messaging, and absolutely shit at video conferencing. I think the only reason people in larger companies use it is because it's marginally better at messaging than Teams (but light years behind in video).
The feature I love the most about the Slack app is when it tells you a message is too long and if you want to view the whole thing you have to open it in a web browser. Pure class.