I know Steve Keen's opinions of the matter. But i'm still skeptical that simple interest rate weapon or collateral would solve the issue. In the end, monopolist, that the rentier always is, can wait (like Adam Smith said), unlike his "victims," who need food. And this "population wealth" of resources will grow even without finance.

I prefer taxes. When the rents are taken off the markets, there is nothing to speculate.

There sure are however arguments for private ownership. But this could be achieved by selling untradable "tax freedoms" that would be zeroed at sale. Then "the euthanasia of rentier" would be real and resources would create public wealth.

Loosely related, quite interesting debate between Alfred Marshall and Henry George from 1880's:

http://findarticles.com/p/articles/mi_m0254/is_5_60/ai_82469378/pg_11/?tag=mantle_skin;content