I'm in the UK. Simply owning land does not incur taxes here, we don't have land value taxes. You pay capital gains tax on profits selling land. There are annual taxes on buildings such as council taxes on houses, specifically to pay for municipal services, but not generally on land.

If I make goods I'm not taxed for owning them, only if I earn income from the sale or use of those goods.

Taxing copyright ownership is effectively impossible.

Unless you want to figure out how to receive a tax bill for the comment you have written.

Just about any written or artistic artifact you create is subject to copyright protection. How do you begin to decide how a tweet should be taxed

IP is next to impossible to appraise, unlike land.

It’s pretty easy to ballpark what a lot of house or office building is worth based on comparables that sold recently. IP doesn’t sell that much and comparisons are harder.

Real property is taxed, but often you do not pay capital gains on sold real property (this "often" of course varies by jurisdiction, so yes in lots of places you may pay some if the conditions are right), when selling intellectual property you often (same proviso as before, only inverted) pay capital gains.

Real property is sometimes taxed. Certain uses/users are partially exempt from taxation, and some uses/users are entirely exempt. It is not legal to rob these properties, nor should it be.