TL;DR: industry momentum I've read this elsewhere on HN, basically it boils down to having great tech doesn't mean everyone drops all their existing Intel tool

TL;DR: industry momentum I've read this elsewhere on HN, basically it boils down to having great tech doesn't mean everyone drops all their existing Intel tooling or Intel-optimized source code. If you care a lot about performance, then you'll care about those things. For everyone else, they just want a reasonably priced processor, and most PC manufacturers have large contracts to get those CPUs at a good enough price from Intel to also not want to switch all their motherboards and factory setups and driver in order.