Microsoft has a monopoly on game consoles that run Xbox games.
Cisco has a monopoly on networking gear that runs IOS.
LG has a monopoly on TVs that run WebOS.
The world is full of devices that are not open platforms for alternative operating systems. And the world is full of operating systems that are not open to commodity hardware. If you don't like Apple's choice in focusing on their particular solution which involves intimate software-hardware integration, the answer is to buy from a competitor that focuses on commodity products.
Personally I'm pleased that Apple is making their operating system the way they do. If Apple changed to suit your priorities, that would come at the expense of my priorities.
This is exactly the position I take. I love Macbook Pros and I'll buy nothing else as far as laptops go. The integration of MacOS, the hardware, and the rest of the Apple ecosystem is hard to beat in many ways.
I can afford them, they're extremely reliable, high quality and most of the issues people complain about are overblown (I don't mind the Touch Bar at all, and the keyboard is just fine - you get used to it).
I'm actually not against the way Apple is making their operating system. My point is just that it's not so simple to buy an equivalent product from a different manufacturer.