We can argue that a high interest rate is good. If the money comes from the rest of the world, businesses can raise money in the capital market and do not have to borrow money from banks. Interest rates do not have to be a decisive factor in a business’s decision for capital investment.
In a borderless world, an excessive money supply by a central bank can slip out of the country if there are no attractive opportunities within the nation. In this way, a government is constantly arbitraged, or disciplined, by its own citizens and by the investors in the rest of the world.