These new Epyc processors have tons of memory bandwidth (16 channels) and on-die cache (128MB). They are roughly 1/4 the cost of the Intel competitor product. For certain applications, this iteration of AMD server processor is a game-changer in performance.
What applications do they not excel at?
Intel Xeon currently gets higher single core clock speeds using turbo. If you have time-sensitive workloads that are blocked by a single thread of execution, then it may be worth paying for the Xeon instead.
They don't have AVX512, only AES-NI. Netflix would need the former more, I guess.