If your designing a new suspension or whatnot then you or someone else need to build a factory to create it, it’s the same for every other car component. So there isn’t an actual battery limitation, just a question of building more battery factories. One level deeper building the machines or build batteries is more of a limitation which can also be scales up.

People point to Lithium as a limitation, but the price recently crashes in 2019 due to over investment demonstrating much faster EV adoption would and is possible.