I would add that the NeXT Computer was faced with similar problems, and had to switch between different processors several times.
Apple/NeXt has much experience with technical challenge of porting entire platforms to different processors and with the business challenges of being tied to critical technologies you do not control.
Apple/NeXt has much experience with technical challenge of porting entire platforms to different processors and with the business challenges of being tied to critical technologies you do not control.