BYD owns mining rights no foreign maker would have been able to invest in per Chinese regulations. The Chinese government sold them Xian Qinchuan for a faction of it’s value. A state owned car manufacturer that was in really poor shape that the party wanted to offload. BYD then shamelessly copied the Toyota Corolla to make the company relevant again. Faced no legal consequences for doing so because China doesn’t care about IP law. There have been credible reports of BYD using slave labor throughout their operation.

So no. GM or BMW or someone should have just invested more wouldn’t have achieved the same results. Tesla is the only one that kinda comes close. And even they can’t match BYD costs per vehicle because Elon isn’t using slave labor just yet. Wouldn’t put him past trying in the future to match BYD.