Every time they zig or zag on the architecture, though, it presents a risk to their third-party ecosystem. Yeah, there will be a few years where a backwards-co

Every time they zig or zag on the architecture, though, it presents a risk to their third-party ecosystem. Yeah, there will be a few years where a backwards-compatibility penalty box is offered, but eventually someone's x86-64 only tools or extensions will break. They also threw out the ability to say "If your company/tasks don't work with MacOS, you can always dual-boot full-fat Windows." They have to be betting that their platform is still big and compelling enough to keep bringing in users and developers to replace anything they lose to the x86-64 abandonment. I tend to think that there's no real magic secret to ARM for low power, it's more that we've spent the last 20 years optimizing them for low-power devices while x86 was traditionally performance-at-all-cost.