The issue is that modern software businesses aren't encouraged, in the slightest, to care about polishing products.

The company leaders only care about features shipped. That's it. They only polish those features if they are shipped in such a broken fashion that they are actively causing outrage. Once the features are shipped, it's done, any additional resources on an already shipped feature is seen as wasted.

This permeates all aspects of modern corporate software, unfortunately. It's why the likes of C# and .Net is forever adding new frameworks and language features while abandoning the existing frameworks. It's why Microsoft has had more new UX frameworks than OS releases. It's why for the same setting Microsoft now has multiple panels for the same information, literally a panel introduce in windows 98, Vista, 10, 11.

The only time a company like MS kills a product is when that product competes in the same space as an existing product. For example, it's why they killed wordpad. It was offering features too close to what Word did for free.

The fact is, it costs almost nothing to add a feature. It costs a ton of money and resources to properly integrate, use, polish, and remove places that feature fits into. I can't imagine the amount of money MS paid to integrate copilot into everything.