Well, the original question was <i>What if they restrict running compilers?</i> and not <i>What if they remove compilers?</i>.<p>Restriction might be a requirement of special licence.<p>This would effectively remove ability to execute arbitrary code from most of the users.<p>The ones who want to run arbitrary code or develop software will have to pay. If someone complains about this, they would be told to shut up and would be explained how this is actually a benefit for majority of the users.<p>Anyway, I will stop here.<p>Edit: I think that Apple is not doing it only because it is not their focus at the moment.