i realize i'm preaching to the choir, but,Tesla does own a battery factory. Just because they have a partner doesn't mean they don't own anything.
You basically made my point. Chemistry is not a moat and even GM can design their own. But no one can supply enough cells at a cost to make it profitable.. hence the moat created by the scale of the gigafactory. Not the battery chemistry.
The battery chemistry is nice and will change over time, the moat for now is their factory (scale and automation).
i think it may bear emphasizing, the Model 3 has 4,416, 2170 formfactor batteries.
at 5,000 vehicles _per week_ that's
4,416 * 5,000 = 22,080,000 or -->>22 MILLION batteries every week or ->574,000,000 batteries by end of year.
5,000 * 75kW * 26 weeks = around 10 gigawatts just for model 3 in just ->1/2 year
Tesla Model 3 battery details revealed in partial teardown and analysis
(I really want my powerwall here in SW Florida so my refrig doesnt go down, again and spoil $500-$800 worth of food)(and my PV)