Rolling in Tanks does not count as Buying. Paying with money counts as Buying. The JNF has as much right to the land it bought as you do any American Land you live on. By your standards poorer people have the right to forcibly kick in your door and throw you out the window. Or wealthy Arabs who own Mosques, they are entitled to break down your door and chop you to pieces because you dare to occupy land that they consider their own, for All That Is Belongs to Allah! Or Maybe you are a Moslem, but they are a Shiite, the same rules apply. The JNF has the obligation to take the land it bought with donated money and use it for the proper purpose. If anyone else wants the land, they better negotiate a fair sale that makes it worthwhile but I doubt you can put a price tag on our survival, surrounded by armies that control more land than the Soviets and have dedicated their vastly superior numbers to our deaths.
French tourist arrested for waving Israeli flag on Temple Mount (Haaretz)
from the article: Violating the norms of democracy