The user should be able to easily install their own choice of software on the hardware they have paid for: e.g., applications, OS, bootloader and BIOS.
Why should they? You don't get to easily put any ingredient of your choice in packaged food, or any instrument of your choice in finished songs, or any cloth of your choice in premade clothing, or any engine you like in a car.
Why should they? You don't get to easily put any ingredient of your choice in packaged food, or any instrument of your choice in finished songs, or any cloth of your choice in premade clothing, or any engine you like in a car.