Tesla panels and total price after installation is too high to be competitive- only the Powerwall enthusiasts buy panels+powerwalls from tesla.
Other panels are so cheap these days and EG4 makes excellent power storage options.
Powerwalls have been a huge disappointment for me so far. It gets pretty cold where we live but the Powerwalls are installed in a somewhat insulated garage. However in winter it gets cold enough in there that they need to use their own power to keep themselves warm, so they drain themselves that way in just a few days if there's no solar charging. Similarly, when the solar generation is high they need to cool themselves and that uses power. Our utility doesn't allow grid charging of storage. So all together I have relatively hope we'd actually have much backup power in an outage.