Yes, however some development of space resources can be profitable if done well. The 1967 UN Outer Space Treaty and the concomitant lack of private property rights is all that stands in the way of that development.
The same is true of Antarctica. But I think we'll see, maybe in our lifetimes, that population boom is going to drive people to challenge those international 'laws' that say nobody can exploit resources there, and what those laws are worth. It'd be like you and me announcing that we're not going to allow strip mining on Pluto. Won't happen, but that's just because we're not in a situation where anyone wants to yet, and while we can proudly say we've stopped strip mining on Pluto for all eternity, that only works until someone tests it and finds out we can't do crap to stop it. When someone does want to exploit space or Antarctica, when the money is right, they're not gonna let the UN or laws get in the way.