Those examples are completely different though....

For one, there hasn't been years of development to establish a common driver standard in those situations, as there is for Human interface devices on a pc...

In all of you're 'wonderful' examples there, the difference is a physical hardware difference...and its not so much the designer not wanting you to do those things as it is a side-effect of individual product development...and choosing the best product for the hardware...

Also, there are OEM parts and third-party parts for all of those situtations, again pointing to the fact the the manufacturer doesnt intentionally try to stifle competition...

Good try, but the logic doesn't line up...