Earlier quoted context omitted.
In case of my company (a 40k employees multinational), everybody gets to suffer from Skype for Business' ridiculousness, I'm guessing even the people who bought it (heck, I'm guessing even the CEO is cursing it on a regular basis). Still, we use it.
And this is proof that Microsoft is still a monopoly, because they can still force people to use software they don't want. Microsoft's biggest accomplishment in technology in the last 20 years is to teach everyone that software is horrible and there's nothing that can be done about it.
Software is horrible.
Software that looked like Excel 2000 with visible accelerators was clean, easy to use, discoverable, fast, not very aesthetically pleasing but at least consistent. macOS of 5+ years ago was more human-friendly.