[mort96]

What you're saying is true for phones too, yet phone manufacturers lock down their hardware to only allow it to run Google's operating system. The argument that "hardware manufacturers live by selling hardware and don't care what software customers run as long as it's on their hardware" clearly doesn't work.

But if you truly do believe that's a good argument, consider Microsoft's position. They wouldn't want you to run non-Windows operating systems and hold considerable power over the Windows PC ecosystem.