Well, once you've explicitly excluded the quarter of Europe that counts as "rich" and "social democracy" as special cases, of course you won't have examples available that suggest that being an economically successful social democracy is possible.

That doesn't even touch on the UK or France. Which, although certainly having their problems, also aren't the same kind of basket cases PIGS are. I excluded them initially because although they seem to have more severe problems than, say, Germany, they're still pretty economically successful and stable. By the time any of them get to a hypothetical debt crisis, the PIGS will have long-since imploded, and it'll be a totally different ballgame anyway that resists prediction.