It seems like fining or banning problems found problems 'in the wild' would require customer troubleshooting to find the cause, manufacturers would lose the pro

It seems like fining or banning problems found problems 'in the wild' would require customer troubleshooting to find the cause, manufacturers would lose the product development cost for banned products, and the regulator(s) would have to staff for discovery in the field rather than in the lab. IMO, this seems like it could be more expensive than finding potential problems early.