This talk was such a treat. After all the carefuly crafted hype from Zuck and the gang, Carmack threw huge bucket of cold water on everything. I think it's just wonderful that he's allowed to speak so openly, about the things he's proud of, the things he thinks are failures, internal politics, the possibilities for improvement, the real hard physical limits VR is running into, and his growing pessimism for the future of VR. I could really hear it in his talk why he moved on to spend more time on his next passion.
Since it sounded to me like the low hanging mobile VR fruit has been picked, I went ahead and pre-ordered my very first HMD afterwards. Time to see for myself if this is the computing future or an evolutionary dead end.