Yeah, a $50k missile to save even a single unoccupied house is a missile that paid for itself. And if it saves a few human lives then it was positively cheap.
If bankrupting Israel by forcing them to expend Iron Dome interceptors is Hezbollah's plan, it obviously isn't working.
I wonder how much is going into location technology much like ShotSpotter but for rockets and mortar and all that sort of thing. They may already know the origins of fire but maybe can't fire back at that precise location or something?
True. But they're unguided, almost none of them will cause real damage, but you have no choice but to take all of them out to prevent the losses from a lucky shot - at great expense. It's a great way to drain your enemies funds, great asymmetric warfare. Casualties are just icing on the cake.
Part of Iron Dome is trajectory analysis. If the profile of a target matches that of an unguided rocket and the CEP is in some unoccupied area, no interceptors are fired. If it looks like it'll land in a populated area, interceptors are fired. It doesn't just shoot everything in the sky.
That analog for a $50 Estes rocket can blow a family apart into little pieces. The discipline is sound - protect your citizens from external threats, no matter the cost. That's the purpose of government and by extension, its military.