Politicians respond to their constituencies, by which I mean their donors. And so while the Washington legislature might be putting up roadblocks for blockchain-based businesses, I don't see this as an attempt to completely block it out so much as I see them looking to create new "revenue streams" for the state (notice the quotes) and setting up the system to favor incumbents. Banks are exploring blockchain tech, and the licensing won't be a big issue for them. The licensing is a barrier to entry to benefit incumbents, such as institutions like the banks, and so while blockchain tech is seen as a liberating force for the crypto-community, the powerful want to make sure they can leverage it to maintain control because they can't afford the disruption this tech will cause.