Apple is one of the only companies in modern existence that could take a 2x hit to their SOC price and still turn an enormous profit on their hardware alone. There are non-Intel options Apple might consider like the TSMC Arizona plant, but Apple would only pick Intel as a fab partner over Tim Cook's dead body.

Don't forget that Apple's leadership is basically glued to Trump's hip for this administration. They'll be getting closer to the 25% rate for sure, and that's absolutely feasible with the margins Apple makes.