Earlier quoted context omitted.
Here in the UK council tax is tied directly to the value of the property too - it's not because it needs more services, just an extension of the logic behind income tax, that people who can afford to pay more, pay more. My point remains that you can't tie a link between "if it is property, it gets taxed".
But much like local services, IP needs government services to function -- it's the customs service that stop cheap knockoff imports, it's the legal system that makes others stop using your patent or levy the rent you as a patent/copyright owner seek. (And eventually, it's the police force and prison system that underwrites the legal system's power). So it's really no different than other "taxes for services" arrangem…
If they insist that its intellectual "property", then they'd best start treating it like property.
So regardless of whether IP should be taxed, the argument for taxing it is not that all property is taxed - because it isn't.