Imagine if MS was forced to "unbundle" Office 365. Consumers could purchase a license to run MS Office on any platform. On of which might be hosted Azure. What percent of the Office 365 revenue would accrue to the products division compared to the cloud division. Sincere guess: 90%+.
Another hypothetical scenario. Imagine if Apple offered a deal on iPhones. Get an iPhone for free as long as you sign up for a grossly overpriced $1000 iCloud contract. All of a sudden Apple would have hundreds of billion in "cloud revenue". But no reasonable person would all of a sudden say that they're now the biggest cloud provider in the world.