All the things you state is only for their phones, not their computers. The bootloader isn't locked at all. And in terms of the "Apple tax". It's largely a myth. If you look at individual components used, they tend to be all top-end binned parts of everything. There is some Apple upmark, but it's not nearly as much as others say. You can't get a PC laptop with the same mix of low weight, high performance, and long longevity.