I'd like to hear both sides of the discussion on whether commerce should be removed or merged with economy.
The commerce tag is not useful and should be removed. It is slightly more specific than economy without adding enough to justify its use. The economy tag is a useful distinction applied to several questions. The commerce tag seems more like a tag applied for the sake of it, just to make up the numbers.
It was recently used to replace the money tag, which I agree was redundant. However, I think commerce is redundant too, and it would be better to discard both money and commerce in favour of just having economy.
I think the commerce should become a synonym of economy. It means almost the same thing, close enough to mean the same thing. People have used it, even though they use it in conjunction with economy. If it is a synonym, you can't use it twice, but it will allow people who are unfamiliar with the terms to use it instead of economy.