Equally important, it was of a US government official speaking, not content Bloomberg specifically created, such as one of their employees giving analysis.
The problem with fair use is that the rules are subject to challenge and interpenetration. Defending an argument for fair use costs a lot of money, and involves significant risk.
The content creators know this, and they'll leverage their money and legal teams to sue for copyright violation, ignoring fair use. Fair use is a valid defense, but the defense must be presented and adjudicated, and that takes time and money.