Ding,
You are way off in left field with your analysis.
No, I am not suggesting that people walk in and occupy buildings indefinitely, nor do I say that they can walk off with equipment...I didn't say that real estate taxes should be enforced to all either.
Watch the video, this girl didn't show up in off hours demanding she stayed indefinitely, didn't walk out with an amp and didn't cause any disturbance - the elders simply didn't like her because of her, shall we say, apostacy. Yet, I am sure she didn't have the choice to NOT pay the fraction of taxes that represented her household's share of making up the KH's property taxes, if she'd be denied the supposed SERVICE.
My assumption was that the exempt status is based on a SERVICE provided to the community. Seemed to me that the WT (and any non-profit by extension) has it both ways: gets the benefit for providing the service and simultaneously decides IF it will provide the service.
In the subsequent Band on the Run's post (thank you BoR), I see that the issue goes beyond simple taxation and is rooted way back into times when religion was much more influential on society...