Why should an O/S be different from other software? There's no money in fixing bugs or improving performance unless either are so bad that it's a marketing pro

Why should an O/S be different from other software? There's no money in fixing bugs or improving performance unless either are so bad that it's a marketing problem. People want features not fixes. Marketeers want features. Developers like new, neat things rather than fixing (hard) problems. And the industry has all sorts of confusion as to what the desktop/deskside things are for. They're not watches or phones. They're way more capable and thus way more complicated. If they didn't need some place to create applications they'd just toss the things. If's not as if Windows is any better? Haven't they changed the UI paradigm a few times (I'm a mac/linux person)? If so, this is worse than not changing it at all. 50 years on and the damned stuff isn't really easier to use and isn't really any faster unless some thought goes into the development. And it still overtaxes the hardware.