Nothing. But they don't need to. They just tackle it at the supply side. If you're a mechanic who wants Tesla parts, you need to go through Tesla. If you go th

Nothing. But they don't need to. They just tackle it at the supply side. If you're a mechanic who wants Tesla parts, you need to go through Tesla. If you go through Telsa, you can't use third-party parts or resell the first-party ones. As a result, the market for third-party parts stays largely too small to exist.