Not sure how that's relevant, as this is about cloud computing, not the desktop, a place where Apple doesn't even have an offering.
Adobe is hooking its Photoshop, InDesign, Lightroom, etc. customers into a subscription-based cloud platform...they had to choose whether or not they wanted to offer their end customers Microsoft or Amazon's SQL storage space and ML capabilities.
Microsoft probably gave them a killer deal they couldn't refuse as they continue to fight their way into the cloud services market.