1. They want some level of backward compatibility, and they were on x86 before.
2. Most of the Tools and Library they used are on x86. Not only from MS & Sony, but also Game developers. It is going to take some courage to change all of that.
3. When the design of PS5 and Xbox X started, none of the ARM CPU IP design, ( In fact even as of today and next year, or may be even 2022 ) has a Single Core Performance that rivals AMD's Zen 2, and certainly not Apple's M1.
4. GPU IP, both are from AMD. Which may actually be more important that the CPU IP from a gaming perspective.
5. In case you ask why not Nvidia then since they made ARM SoC like those in Nintendo. Nvidia's pricing for latest Gen IP is way out of touch. Hence that is why you only see non-leading edge tech used in Switch. ( Nvidia is not a player that wants to sacrifice Margin for Market Share, which is actually a fair point )
2. Most of the Tools and Library they used are on x86. Not only from MS & Sony, but also Game developers. It is going to take some courage to change all of that.
3. When the design of PS5 and Xbox X started, none of the ARM CPU IP design, ( In fact even as of today and next year, or may be even 2022 ) has a Single Core Performance that rivals AMD's Zen 2, and certainly not Apple's M1.
4. GPU IP, both are from AMD. Which may actually be more important that the CPU IP from a gaming perspective.
5. In case you ask why not Nvidia then since they made ARM SoC like those in Nintendo. Nvidia's pricing for latest Gen IP is way out of touch. Hence that is why you only see non-leading edge tech used in Switch. ( Nvidia is not a player that wants to sacrifice Margin for Market Share, which is actually a fair point )