Just adding some historical notes, Portalplayer's IC was used in the iPod until 2006ish ( https://en.m.wikipedia.org/wiki/PortalPlayer ), the first iphone used a Samsung ARM chip (https://en.m.wikipedia.org/wiki/IPhone_(1st_generation) ) , and fabless design companies like P.A. Semi and Intrinsity were acquired by Apple in 2008 and 2010, respectively.
Just adding some historical notes, Portalplayer's IC was used in the iPod until 2006ish ( https://en.m.wikipedia.org/wiki/PortalPlayer ), the first iphone used a Samsung ARM chip (https://en.m.wikipedia.org/wiki/IPhone_(1st_generation) ) , and fabless design companies like P.A. Semi and Intrinsity were acquired by Apple in 2008 and 2010, respectively.