USB wasn't intended to connect two PCs together. That's the reason for the differently shaped cable ends in first generations; to prevent people from trying to do that. Done carelessly between 2 live PCs with a sketchy non-compliant cable is a smoke & fire event.
Later generations of USB can do it if the hardware is proper, but you can try that first on your own PC, not mine.
Firewire, OTOH, did have intent to be able to link 2 machines. Apple Macs, with Firewire ports standard on every model, had a feature where they could be booted with no UI and behave like an external drive connected to another Mac. Two Macs could form a 400 Mbps network over a cable too. Not all PCI Firewire cards supported this ability, however. I exploded a card in a Windows PC connecting it to a Mac.
Finally, you have to ask, "why bother" with chasing 80 Gbps speeds. Almost no storage device in a common PC can send or receive at that speed. Maybe a M.2 PCIE drive or maybe transmitting directly to or from RAM. But just like USB 3 and USB 2 before it the bottleneck is the storage which usually can't read, and certainly can't write, at those speeds anyway.