Because we haven't yet reached that level of awareness collectively. There are many of us who have and humanity is beginning to undergo a sizeable shift in consciousness however we are some way away from a tipping point. In spite of our self reverence and tech, we are very much a still a species in its infancy; poverty, war and inequality abounds. We still consume sentient beings. We favor personal amalgamation over the well being of all. Greed and the pursuit of power is a virus. Im sure you've heard of the Venus Project - it sounds perfect but:
If there is a revolution or sudden ecological disaster that forces us to come together and work as a community again, do you think we could live in a perpetual vaccum of power and collectively abstain from the virus on this level of consciousness? Or would we just slowly start killing each other over resources again?