Microsoft exec suggests AI agents will need to buy licenses, just like employees

To that makes perfect sense. You get charged for usage of their service and they chose to do that by assuming an average usage per license / person and charging that. When you get to cram in more usage/person by using a third party, they either charge you for access via that third-party or that could also just increase prices per personal license. I guess they figured the latter would be less popular or they can't do it, because they have existing contracts.

They don't care about your headcount, but you do use more service.