My desktop machine can fully rebuild the game in a few minutes. Azure takes 20-30 minutes. I'm sure many of these cloud services are using way over worked VMs. I'll deal with it because I don't want to set up and maintain my own machines for building. I have a game to make and CI build machines isn't where I want to spend any effort.
@grumpygamer the idea of cloud is running everything in parallel on VMs. So start a job for each platform and not one job building all platforms.