I find Teams is often simply picked because of cost reasons.
A lot of companies are paying for office and teams comes bundled with it. Why pay extra when its included?
That was the reason we ditched Slack. I hate Teams with a passion, but we're not going to pay 6k per year for a chat app if we get Teams for free. There's just no way to defend that decision.
yeah I don't understand how this isn't blatant market abuse through their monopoly position
Regulators should be all over it. EU has tried, but unsuccesfully, since it was lawyers who came up with the mitigation.
Yep, the amount of penny pinching some companies do nowadays is insane. Teams coming "for free" with their Microsoft 365 subscription is net positive for the bean counters.
Don't forget network effects. If other companies you are working with use Teams then there is less friction if you also use Teams yourself.