Yes, because you know what all of the 200,000+ employees are doing in every wing and branch of the entire company.
Then again, Microsoft themselves directly dispute your statement:
Across the landscape of more than 750,000 devices in use at Microsoft, we support Windows, Android, iOS, and macOS devices. Windows devices account for approximately 60 percent of the total employee-device population, while iOS, Android, and macOS account for the rest. Of these devices, approximately 45 percent are personally owned employee devices, including phones and tablets. Our employees are empowered to access Microsoft data and tools using managed devices that enable them to be their most productive.
https://www.microsoft.com/insidetrack/blog/evolving-the-devi...
Not to mention that most app designers use OSX for the design tools, which means that there is going to be by default some bleed between the two systems on design choices alone.
