Giving where credit's due, some of the high-discharge long-endurance Li-Ion research is done by Tesla. Other electronic devices generally converge towards slow-discharge, semi-fast charge, low self-discharge batteries.
EVs are unique in their battery requirements. They demand high-discharge, high-endurance, very fast charge batteries, and Tesla did some research on that front. What's important that they were not the sole researchers in that area.
On the other hand, they lack the know-how required to make cars efficiently and assemble them with state of the art methods (minimal/standardized fasteners, fatigue management, fast manufacturing with consistent quality and finishing, etc.).
