What's interesting is that Apple apparently plotted that graph too. They knew exactly when that crossover was going to occur, for years now.
* Broken 10nm and 7nm fab process. No end in sight. Even IBM could surpass them.
* Even with much stricter memory guarantee orderings they managed to break caching and C3 kernel/ user seperation security (Spectre, Meltdown, ...).
* Temperature management. Eg AVX512!
* The government "mandated" backdoors.
Who would have expected such massive Boeing-like fuckups from the industry leader?
Let me know when you find one.
Of course a generally competent government probably wouldn't decide it'd be a good idea to backdoor CPUs, but that's another issue.