I think the worst enemy is the bankers, crypto will be the end of banking, as there will be no need for them, thank God for that, The bankers are the biggest criminals in the world.
Yes you are right that banks are one of the enemy of bitcoin besides other governments regulators but I suppose that banks will start accepting/dealing in bitcoins. There is no other way left for the bankers to adopt dealing bitcoin because it is the biggest threat to banks.