My crude metaphor to explain to my family is gasoline has just been invented and we're all being lent Bentley's to get us addicted to driving everywhere. Eventually we won't be given free Bentley's, and someone is going to be holding the bag when the infinite money machine finally has a hiccup. The tech giants are hoping their gasoline is the one that we all crave when we're left depending on driving everywhere and the costs go soaring.