From outside as consumer. The end problem is that these product do not compete on price. A chat app on enterprise at the scale of customers they have should probably be 1€ a month. Not 10 or 20€.
That might not be multi billions a year business, but maybe chat app should not be one.
I think a big factor is generational. Bigcos are led mlby generations that are phone or email first. Chat is an afterthought. For orgs like that, Teams is great if chat is your least important collaboration method.
