Maybe they are happy. The people I've met living that way seem miserable. That's really all karma is, cause and effect. We either learn or don't. I really believe that the kingdoms of heaven (and hell) are inside us. That doesn't necessarily equate to physical reality, eg, every need met can still leave people miserable, people who seemingly struggle manage to find peace, if not happiness, others who match their physical reality, often we slide among points on the spectrum of being.

I don't see it as perfectly balanced or absolute equilibrium. I see it as more of a spiral hourglass that flips like the magnetic poles. But that's a whole other discussion and I need to develop that concept, as I just surprised myself with it. That's a sleepy thought.