That’s a lot of hypotheticals that won’t ever happen. First of all, nobody does anything for free. Second, Google already has a store and they call it Google Play Store. They take cut out of every transaction since nothing runs for free. If Elon Musk said such thing, I would laugh and add it to the list of things that he said and never delivered. What happened to his Tesla ventilators, solar roofs and countless other things??? Yes, exactly.
I will eat my words if either Google or Elon Musk decides to be the most profitable charities in the world. Hypotheticals don’t pay bills, my friend.