Not really as negative as you make it sound. The original Powerwall was superseded by Powerwall 2 with more capacity, better battery management and upgraded load capacities. You can bet there will be a Powerwall 3 too. It won't be because the Powerwall 2 didn't do well, it'll be because they have a newer, better version. Why would they leave out-dated and superseded technology on the market? Superseded versions are always withdrawn from the market! Technology marches on! Exactly when it becomes compelling enough to adopt will vary for each individual and mostly has to do with individuals standard of living. Poor people in the inner city will be living with power outages for decades to come. They will just do without when there is a disruption or shortage. For somewhat affluent people, the Powerwall 2 already hits the sweet spot of the cost/benefit curve and is improving their lives as we discuss. Cheap bastards (like us woodburners) will probably decide to wait for Powerwall 3. Some of us old curmudgeons will swear batteries are no damn good for the rest of our lives as we drive our smoking antique pick-up truck to the gas station and pay $7/gal. to get 5 more gallons to pour into the gas generator under the garage eave. Then we will cuss to find out the gas won't pump because the power is out!