That's why private property is a good idea. If the natives owned the property (the last monarch's corruption makes it worth a separate argument) , they'd probably want the rent. Or at least the builders would have known ahead of time that building the telescope was not worth their time. If the scientists owned the property then it would have just been built already. The idea of "public property" is what leads to these sorts of conflicts; low - IQ politicians are a far worse way to decide issues then rationally-enforced market discipline.