As Balmer put it: developers, developers, developers.
In other words: the purpose of (consumer) Windows isn't to make money for Microsoft; the purpose of (consumer) Windows is to create a sales channel — "Windows users" — for Windows developers like Adobe to sell their Windows software products into.
Microsoft then makes their money off those very same Windows developers, through corporate Windows licensing, Office subscriptions, Azure, etc.
As such, Microsoft tries as much as possible to avoid "bringing in" any features that are currently being sold as products by companies in their developer ecosystem (which would deprive those developers of revenue, and thus deprive them of revenue.) Acrobat charges to rotate images? Better not offer native image rotation.