Don't be such an annoying hater. I can't install Windows XP on my new Mac. That has nothing at all to do with the price. I can't install Windows 8.1 on my five-year old Mac. That has nothing to do with price. You can't install Yellow Dog Linux on your PC. That doesn't mean YD Linux is not free.
Maybe you can boycott supermarkets that advertise "Buy one, get one free!" Is it free if you have to pay for one to get the "free" one?