I often see products optimise for the "get-started-quick" part, which is often 0.1% of the total experience. For example, reviews of operating systems often focus more than 50% of the content on the upgrade or installation process, even though that's actually a rare operation.

Azure focuses on Microsoft's large enterprise customers. They want guard rails, separation of responsibilities, policy, compliance controls, etc...

Nothing to do with the process required to get 1 VM up and running from scratch, including signing up. Their bread & butter customers have enterprise agreements in place already for Office and Windows licensing!