There was a time when the CIA was intimately involved with drug traffickers as part of the Contra program. It didn't go to the top and it wasn't deliberate CIA policy, it was just a matter of the CIA building tremendous infrastructure to supply the Contras that led to airfields and weapons ending up being used by the same CIA-supported individuals for drug trafficking. They ended up producing a massive cocaine import industry.

With this level of spying infrastructure and the poor oversight of agents and admins within the NSA, corrupt usage of this technology is effectively inevitable.

It is not really a crazy conspiracy theory to think that the NSA might be engaging in industrial espionage:

https://en.wikipedia.org/wiki/ECHELON#Controversy