I find it amusing to see so many people questioning why Tesla didn't release a cheap Tesla sooner. The answer is: They don't have the batteries to do that. That's why they are building the GigaFactory. People don't get that, on a large industrial scale, you actually have to think about supply. They think you just spend money and supply shows up because they are used to thinking on a household scale where supply is ge…
Tesla consumes a small fraction of global lithium-ion battery production. When the overall market is much larger than the marginal consumption, the assumption that offering more money increases local supply holds perfectly well. Even if you assume that Tesla is demanding 5% of the battery market which would be an outside estimate that's still well within the region where paying more will get you more.
Back in 2013, the global production was estimated to be 35 Gwh (cf. Gigafactory announcement presentation).
How much has it grown in the past 3 years?