Some of us _really_ want a powerwall or 2, to hook up to our oversized PV arrays so we can become nodes in local VPP’s and micro grids, and put a sign in driveway for “destination charging for Tesla’s” in a ‘tarted up’ modified repurposed gas pumpPlus, they don't have any extra 21-70 batteries. That would mean giving up Model 3 sales or Tesla Energy sales when they could keep using 18650s like they have been doing..