I'm talking about the "he's a successful guy" kind of success. No, happiness is not zero sum. It's something like logarithmic with absolute wealth, but way more sensitive to relative wealth. Of course there's more to happiness than net worth, but that's outside the scope of this discussion.

Those seem like personal (or perhaps social) problems for those who think that way. Seeing lots of people who are not well off certainly doesn't make me any happier. It depresses me and makes me want to help the local shelters.