If property taxes don't vary based on who owns them, but rather by some standardized valuation, then why does it matter if it is owned by an LLC, a Corp, or some individual? The tax is the same and needs to be paid regardless. The land will need to be used effectively, or it's a cost on a balance sheet somewhere coming out of someone's pocket.

The 'utility based value' is always the same then, correct? And the incentive to use it effectively is the same too, correct?

The 'value' of these kinds of rule changes is because, eventually, the tax WILL be different based on who owns it. 'Good people' (based on the current political winds) of course being given good rates, and 'Bad people' getting punitive rates or having it outright seized.