I find it infuriating, but that's how the system's supposed to work. It's the definition of a monopoly and they're in the extraction phase. When there's no competition (and eventually there's always going to be a winner) you don't need to make good products anymore.

They've successfully indoctrinated whole generations to use Windows/Office. Here in Brazil using a computer was (probably still is) synonymous to using Windows/Office. Everyone had their pirated version of Windows and many don't even know that alternatives exist. When those people open companies they'll use what they know.

Software companies have to build for the most popular OSes and most can't justify anything else. Which then means most software only works on Windows and people can't leave it even if there are better alternatives (see Adobe). Finally, any non-closed computer comes with Windows so the cycle continues forever.