Why can't we have a 'user-first' company. Maybe think about the user of your products a wee tiny bit. But no, it is not to be.
Their end users are what they ultimately sell. They are captive audiences. This is what monopolies/platforms do. It's never been part of MSFT's DNA to care that much about end user experience. Who they really cater to are the IT decision makers, etc. These people can then show some numbers about "AI adoption" and "productivity" gains on their Power Point slides presented to their bosses. MSFT's value is delivering that to them.