Slack is a weird choice of example, and so is Zoom. They're both currently getting their lunches eaten by MS Teams for specifically the reasons laid out in the

Slack is a weird choice of example, and so is Zoom. They're both currently getting their lunches eaten by MS Teams for specifically the reasons laid out in the grandparent. Slack in particular had to take a just-OK buyout from Salesforce and the product has seriously stagnated.