You are in their ecosystem, you will use their products.
It took them 12 years to make Teams almost as good as Slack.
Azure only has made it this far because its Microsoft, so many of their roll outs have been terrible (looking at you AKS, Cosmos DB).
Copilot is used at my wifes company because they get it for free, and it seriously seems like its ChatGPT 3.5 still