I said yes, but labeling isn't in the interests of any producer,...
So, you lied to him to win your argument. Labeling most certainly is in the interest of the producer because it's an interest of the consumer.
if none of them labeled, then would customers just choose to starve to death?
Another piece of bogosity. This is definitely *not* the only alternative available.
Your friend missed two fallacies in your #2 "gotcha" query.
If the practice doesn't influence all the other companies to use the same practice, what's the deal?
Figured I'd just use a hypothetical question since one appears to by your entire argument as well.
There's no way in hell any government would pass a law forbidding its own soldiers from carrying weapons.
Maybe not law but we have a number of dead military personal gunned down in their offices to demonstrate our military will indeed disarm their troops.
I'll presume to correct your statement to mean "any sane government".
Aren't you glad you're not getting all the government you pay for now?