Quote from Tom B:
The land value to total property value ratio can vary greatly depending on where the property is located. For example, in southern California, the land could be worth $275K out of the $350K. In addition, the income of the family that purchases a $350K house can vary greatly. One family could have a much lower income than $100K; but, purchases the house with a one time large down payment. The down payment could come from equity from a previous house, investments, savings, etc. The 40% land tax in this example would amount to a huge tax rate related to income earned.
Your concern about property values is actually used to argue in favor of LVT. Locations with high property values are populated by more wealthy people. If someone wants to live on what is considered a "prime" residential lot, they must pay a higher tax. Thus someone choosing to live in Newport Coast, CA is purchasing the privilege from the community.
Typically the locations with the highest residential property values have either or both of two characteristics.
1) prime location
This includes view, proximity to other locations, etc.
2) significant building restrictions
Places like Newport Coast, Lauguna, Boulder CO, Hamptons NY... There are significant restrictions with the express intent to remain "high end". There is no other real reason for these restrictions, so if the people in that area want to isolate community land for such a purpose, they will be required to pay for that privilege.
The point is, that the LVT has the specific purpose of providing an incentive for most efficient use of land. If a certain piece of land has a higher value it is because there is either a more productive use for it, or someone wants the privilege of restricting it.
As to your second point. When a person lives in an area, regardless of whether they have income or not, they use the system that was built around them. The roads must be maintained. The sewer must still function. Are you suggesting that people should be allowed to take advantage of all of this infrastructure for free?
OTOH, some have suggested the idea of cutting the LVT in half or something for primary residences.