The bottom line is money. You need money. And lots of it.
Threadripper 3990X CPU costs $3,990
AMD Ryzen Threadripper 3990X CPU Review
Threadripper 3990X vs. 5950X: 1 BILLION Lines Of Object Pascal Code For #Delphi26th
AMD Ryzen Threadripper 3990X Review 64 Cores for a Workstation
Threadripper 3990X Gaming - AMD 64-Core Threadripper 3990X Review: Battle of the Flagships - Page 4
AMD's monster 64-core Threadripper 5000 CPU could power your next DIY PC build
What is AMD Threadripper? - GadgetMates
Slashcam News : AMD Ryzen Threadripper (Pro) 7000 - Workstation also as HEDT midrange again
AMD isn't competing with Intel anymore -- Threadripper wins
The AMD 3990X Pre-Review and Overclocking World Re - AMD Community
AMD Ryzen Threadripper Pro 5995WX Review