It's a justifiable concern, that somehow hardware companies will wall off high-end hardware from Linux because of the industry pressure behind ill-fated venture

It's a justifiable concern, that somehow hardware companies will wall off high-end hardware from Linux because of the industry pressure behind ill-fated ventures like pervasive DRM and Windows piracy protection. I'm glad that Apple still has the "fine, but it's your funeral" option that lets users do what they want. Secure by default, open if you want/need it.