The reality is that, like the many many software development companies which we've all seen come and go over the decades, after a certain point a software development applications simply evolves to become unappealing if not unusable.
The issue is that, in most cases, it's driven by money (ultimately needed for survival) and not human need.
An operating system should, for the most part, be transparent to the user. And as most have experienced, agencies in software development for profit, ultimately disappear because their stuff simply evolves into an unappealing monster. We've seen this with databases, word processors, graphics systems, multimedia and even with games.
Basically, to maintain profits, software keeps getting expanded with stuff fewer and fewer people use or need till it becomes problematic for typical users (ie, effectively "keep fix'n it till it's broke").
It's just simply easier as a sales tactic to add more than it is to continually make something better.
MS Office is also at such point. One pulls up the latest office on a public library computer and what one sees is so much screen trash of buttons, menus, boxes, ribbons that the average user is simply overwhelmed and 95+% of users only ever need 0.1% of what the software is capable of.
The first thing I do using a public library computer is make available on the desktop the old MS Paint, Notepad and WordPad from WinXP because all the equivalent apps in the supposed latest & greatest OS are just too busy/cluttered with unnecessary trash (that 99% of users never use) and thus simply hampers use-ability.The aforementioned WinXP apps handle 99+% of what I need done during the typical library session and they do it quickly, cleanly with ease on the eyes.
Having worked in design of very involved command and control systems, there's a good amount that could be done to improve things and make software more desirable, hence marketable, but organizations (eg, like MS) typically just get so huge that they become effectively ossified and inflexible.
The top down structure instead typically focuses on other strategies such as market cornering attempts and/or becoming sole source to deep pockets such as nationstate governments, in order to be able to feed the corporate behemoth.