associated by who?
Pretty much everyone, including law enforcement.
The media loves to link Bitcoin to "the dark web" and terrorism.
invested hundreds of millions of dollars into blockchain technology.
Blockchain technology is not virtual currency, it's merely a distributed/verified ledger of transactions.
Lots of companies want to get involved with using the blockchain concept, not all of them want to get involved with using Bitcoin.
Even SWIFT, the 800 lb gorilla of financial transactions, is trying to figure out how to revamp their business to use blockchain technology as the foundation. Likely a private blockchain which they can control.