Occasionally the knockoffs are better than the "real" thing.

I once had a fleet of HP servers that had storage parts constantly failing. HP techs couldn't do anything useful about it, they just kept replacing the parts with authentic HP replacements.

Then HP ran out of the parts, probably due to the failure rates. Out of desperation we bought some cheap knockoffs to keep things running until the HP parts came back into stock. Those cheap knockoffs worked perfectly and were reliable, zero issues. Much better than the HP parts. We ended up buying enough of those parts to replace all the HP parts.

Many times the expensive official parts are literally the cheap knockoffs with more steps. And sometimes high-quality knockoffs are competing with the low-quality branded versions.

There would be enormous value in being able to trace the true provenance and supply chain for everything you can buy. It would be extremely challenging due to the incentives to misrepresent this information.