I have been an AMD investor since pre-Zen launch and I think it is fair to say that EPYC sales feel like they haven't reached the levels some have hoped for quite yet. If AMD continue to widen the gap between EPYC and Xeon, I suspect we may look back on this inertia as a bit of a 'roadrunner effect' and in a year or two's time get a shocking quarter where AMD suddenly starts taking surprisingly large bites out of Intel's datacenter market share.
Also on the GPU side of things, it is rumored that Nvidia has struggled to get capacity at TSMC and is having to use Samsung's, supposedly inferior, 8nm process for its forthcoming Ampere cards, at least until their 7nm capacity comes online at TSMC. Not sure how much truth there is to this, but highlights the capacity issues that may currently be in play.