The IMC is not an instrument rating. The holders are not instrument rated.
It entitles the holder to fly on instruments.
It costs me a fortune to drive a 4x4 round inner London (more than the cost of an IMC rating each year. I was able to do it for free. Can I not pay and claim my rights to Natural Justice in infringed?
No, because you have no good reason to do so. You cause an unacceptable level of pollution and you dont need 4 wheel drive in London. I would ban them completelly.