If I paid for the device, ethically, I have the right to use what ever software I want on it.
also, this is silly on its face. ethically or not, you only have the right to use a small subset of software on your toy. only a portion of software is written for a particular device! ethically, if you want to play temple run on your and-crap, to f'n bad! because they don't make it for your and-crap.
Well the law would seem to agree with my premise, along with the concept of ownership going back thousands of years.
If I own the hardware I have the absolute right to run any software on it I want. I paid the for the hardware. It became mine. If you want to dispute that premise, then you need to explain how after the sale they still enjoy rights of ownership. Can you explain that?
Something similar has been argued before and lost. That was the right to install after market parts on your car from different manufacturers in the US. The car manufacturers lost. This situation is no different. Manufacturers cannot enjoy rights of ownership when a sale is performed. Period.
While this might be accepted by the consumer because they lack the sophistication to understand what is happening, businesses do not. You can't sell that way to businesses because they see it as a liability. Specifically the manufacturer trying to control the device. Court cases have been lost before over it. It just won't work on businesses.
The solution is not to sell to businesses. This is why when a manufacturer wants to retain control in a business environment they lease. You can't own a Pitney Bowes postage machine. Some security devices you cannot own either.
Your argument is silly on its face. First you say that ethics are not a consideration. Ignoring that whopping egregious error in judgement, you have the rights to use all the software on your device the way you see fit. Where limitations come into play is when you wish to distribute your changes directly, via copyright laws. Which is why the DMCA is used so often to prevent such acts.
Secondly, all of the software was written for the device. If it was not, it would not be there. Kind of like trying to run a Windows binary on Linux natively.
Thirdly, you own the hardware out right. Typically, there is going to be several pieces of hardware inside that have firmware written by a 3rd party company. You have the rights to use that firmware to carry out the intended function of the hardware, or write your own.
Which brings us to the last point, you always retain the right to run whatever software you want on the hardware. Dell cannot force you, in any way, to run a specific set of software on your hardware. You get to choose. Apple hardware is no different, ethically, or legally. I can replace the software in any way I want, and even modify it to suit my needs. I just have to contend with copyright restrictions that don't allow me to distribute those changes in a nice neat package. However, I can tell people how to do it legally (and ethically).
BTW: You clearly refer to Android in the derogatory sense, but it is worth noting that it is open source. That means I can compile it and install on it hardware that is compatible.