They pay multi-millions to license Imagination Tech patents and poached most of their best designers. Even with a custom design, those designers are likely to

They pay multi-millions to license Imagination Tech patents and poached most of their best designers. Even with a custom design, those designers are likely to think along the same lines (and Imagination Tech IP is pretty good in it's own right). In any case, I doubt Apple would pay that much money if they didn't need rights to the IP. The only real question is why they didn't acquire the company outright.