As much as it is easy to license from ARM and use TSM as a foundry, it does not make much economic sense. Look at Google's purchase of Motorola. They ended up

As much as it is easy to license from ARM and use TSM as a foundry, it does not make much economic sense. Look at Google's purchase of Motorola. They ended up selling Motorola to Lenova. The hardware industry and specifically the chip industry is very specialized. If your code competency is not chip making, it really does not make sense to try to enter the industry.