They can't prevent it, but they can certainly disavow it. By explicitly saying they don't support it or by making it harder to sell to the next person like region-locked or console-locked media.

I guess I'm surprised they don't! As the other commenter points out they have a page dedicated to this. I conflated their stance on secondary sales with their hardware and software self-service hostility.

Doing that is illegal in the US.

Right of first sale applies here.