Definitely want to use it for automation. When writing bindings for a large library it's helpful to have a script that picks several files as implementation examples then has Copilot write the rest by i.e. looping over library headers.
For example, if Microsoft took a chapter from Apples (anticompetitive) playbook with Spotify, They could always make Azure Extensions N features ahead of equivalent AWS Extensions.
The productivity gains vscode devs would have by using Azure would always be more than AWS, and the cycle of user lock in would march forward.
GitLab and Google would have much better "synergy" since GL already runs on GCP. The ruby may be a culture clash, but I wouldn't put it past Google to have some tooling to help GL straighten out their ruby mess
Secretly, though, I want Google to buy Atlassian just to send it to KilledByGoogle