It's TSMC. Their rise is waaay before Apple or ARM. Plug and play fab model made getting into semiconductor design as a start-up possible. Broadcom, Qualcomm, Nvidia, Conexant etc all used TSMC in 90s, way before smart phones and ARM-mania. Intel saw this coming but they were ahead and they didn't worry about it. At the end they got stuck at getting bad yield from their FinFETs, which is invented by Intel, while TSMC and Samsung moved forward. Iphones would have been using Intel processors if Intel had a competing product to be honest. They screwed that up too. TSMC and Samsung just had the right mindset and focus, and a lot of smart and hardworking people.