I think that both the military and environmentalists will agree that security and environment are limited resources and need to be conserved effectively for us to make the most use of it.

We certainly do pay a LOT for our military, and if we assume that the environment is an infinite resource we end up destroying the ecosystem in one way or another. (I think the latter is a good metaphor of what happened to the music industry in recent years.)

The idea that anything can be free I think can often be dangerous in itself because it encourages us to take things for granted and not give them their proper respect. Crypto has the ability to change this, though the transition won't be easy because we've just gotten used to things being a certain way for so long.