I'm honestly not sure which point you're making in this thread. Are you saying that government should somehow make people whole for the loss of their coastal property? Or are you making the point that the government has no business interfering with the property rights of others? There seems to be a tension here, because I don't see how you could do the latter without also doing the latter — i.e., making coastal property owners whole requires taking someone else's property (either money or real property) and giving it to them. Or maybe you'd propose that we resettle them onto federal lands? (Even in that case, taxpayers bear a significant opportunity cost.)