Snap opinion made by a software dev who thinks the entire world revolves around software development and this dev's workflow.
There's any number of reasons an org would choose teams over slack, or any Microsoft product over an alternative, even your example of the cost shows a clear lack of knowledge of information outside your narrow scope.
How do you know your org is paying the price you found on a website?
You realize there are other vendors people pay infrastructure contracts through who bundle Microsoft products in their contract?
There's any number of reasons an org would choose teams over slack, or any Microsoft product over an alternative, even your example of the cost shows a clear lack of knowledge of information outside your narrow scope.
How do you know your org is paying the price you found on a website?
You realize there are other vendors people pay infrastructure contracts through who bundle Microsoft products in their contract?
Stay in your lane.