It's still that way, but a bit less so. The intractable problem now is entire supply chains end to end do not exist in the west. If you wanted to start a battery company you are going to have a really hard time sourcing all your components in-country. All the way down to the inks used in printing the serial number on stuff.

In the end of course it all ends up as a cost, but even if you somehow dropped all environmental standards and set the cost of labor to match China today it would take decades just to get the institutional knowledge and infrastructure back.