>For people who support this kind of ban, I'd ask if you would support a similar ban on new factories for, say, car parts.

They de-facto banned these things over the past decades by saddling them with requirements that make them non-competitive locally and/or globally while simultaneously opening up international trade. But they're in denial about this so they'll whine about how it's "not technically a ban" because hoops that are a non-starter to 99% can be jumped through at great cost when the 1% profitable enough to justify it example comes along.