Does anyone remember that old game: "Bureaucracy"? The aim was too keep your blood pressure low enough not to have a stroke and die while dealing with everyday issues. Maybe a remake with this sort of controller is in order, then it could measure your real blood pressure.
Then, maybe, someone can use the measurements as evidence in a suit against... well basically every cable, internet, or phone company, building contractors, and government institution.
The banks, on the other hand, are very easy to "kill" — just stop using them.
Except when the government steps in with your taxes to bail out the bank that goes bankrupt because everyone stopped using it; and that is assuming Joe Consumer actually has a big enough effect in the first place, because banks don't get deposits only from the man on the street. The money is in the loans. And you can't just stop using a bank if you have a loan. Can't buy a house without a loan either generally, and buying often makes more sense than paying off your landlord's mortgage.
develop nuclear weapons.
As another commenter said already, Canada went through nuclear disarmament in 1984. (The US wasn't pleased.) "Develop" is definitely the wrong word.
Work is the crab grass in the lawn of life. -- Schulz